Publications (Research Articles)
D.-W. Lee (with Sunyoung Lee, Yeonjeong Kim, Jeong-Eun Lim), On Automorphisms of Graded Quasi-Lie Algebras, to appear in Filomat.
D.-W. Lee, Digital H-spaces and actions in the pointed digital homotopy category, Applicable Algebra in Engineering, Communication and Computing, 31 (2) (2020), 149-169.
D.-W. Lee, Algebraic loop structures on algebra comultiplications, Open Mathematics, 17 (2019), 742-757.
D.-W. Lee (with J.P.C. Greenlees), The representation-ring-graded local cohomology spectral sequence for BPR<3 >, Communications in Algebra, 47 (6) (2019), 2396-2411.
D.-W. Lee (with S. Lee), Homotopy comultiplications on the k-fold wedge of spheres, Topology and its Applications 254 (2019), 145-170.
D.-W. Lee, Near-rings on digital Hopf groups, Applicable Algebra in Engineering, Communication and Computing, 29 (2018), 261-282.
D.-W. Lee (with Y.-J. Kim and O.-N. Lee), On the commutative comultiplications on a wedge of spheres, Far East Journal of Mathematical Sciences (FJMS), 103(9) (2018), 1279-1288.
D.-W. Lee (with Y.-J. Kim and O.-N. Lee), An associative comultiplications on a wedge of spheres, Far East Journal of Mathematical Sciences (FJMS), 103(8) (2018), 1279-1288.
D.-W. Lee, On the digitally quasi comultiplications of digital images, Filomat, 31(7) (2017), 1875-1892.
D.-W. Lee, Exact sequences on localizations, Far East Journal of Mathematical Sciences (FJMS), 100(12) (2016), 2169-2174.
D.-W. Lee, On the same n-types for the wedges of the Eilenberg-MacLane spaces, Chinese Annals of Mathematics, Series B, 37(6) (2016), 951-962.
D.-W. Lee, Comultiplication structures for a wedge of spheres, Filomat, 30(13) (2016), 3525-3546.
D.-W. Lee, On the quadratic cohomology algebra comultiplications, JP Journal of Geometry and Topology, 17(1) (2015), 49-62.
D.-W. Lee, On the generalized same N-type conjecture, Mathematical Proceedings of the Cambridge Philosophical Society, 157(5) (2014), 329-344.
D.-W. Lee, Digital singular homology groups of digital images, Far East Journal of Mathematical Sciences(FJMS), 88(1) (2014), 39-63.
D.-W. Lee, On inverses and algebraic loops of co-H-spaces, Acta Mathematica Scientia, 34(4) (2014), 1193-1211.
D.-W. Lee (with S.-Y. Lee), Group structures and actions of an automorphism group on the set of Lie algebra comultiplications, FJMS, 87(1) (2014), 75-88.
D.-W. Lee, Algebraic structures based on a classifying space of a compact Lie groups, Abstract and Applied Analysis, Volume 2013, Article ID 508450, 7 pages.
D.-W. Lee, On the same $n$-type of the suspension of the infinite quaternionic projective space, J. Pure Appl. Algebra, 217(2013), 1325-1334.
D.-W. Lee, An essential map whose localization is trivial, Far East Journal of Mathematical Sciences, 71(2)(2012), 399-403.
D.-W. Lee (with H.-S. Yoo), Equivalences in the derived limits, JP Journal of Geometry and Topology, 12(1)(2012), 99-110.
D.-W. Lee (with M. Arkowitz), Comultiplications on a wedge of two spheres, Science in China A-Mathematics, 54(2011), 9-22. doi:10.1007/s11425-010-4061-0.
D.-W. Lee, On the same n-type structure for the suspension of the Eilenberg-Mac Lane spaces, Journal of Pure and Applied Algebra (2010), 214(2010), 2027-2032, doi:10.10.16/j.jpaa.2010.02.007.
D.-W. Lee (with M. Arkowitz), Properties of comultiplications on a wedge of spheres, Topology and its Applications (2010), doi:10.10.16/j.topol.2010.03.001.
D.-W. Lee, On ring structures under strong cup products, Communications in Algebra, 38(2010), 964-980.
D.-W. Lee, On the same n-type conjecture for the suspension of the infinite complex projective space, Proc. Amer. Math. Soc., 137(3)(2009), 1161-1168.
D.-W. Lee, On the same homotopy types, self-maps and rational morphisms, Far East J. Math. Sci., 30(2)(2008), 205-209.
D.-W. Lee, On first derived limits, Far East J. Math. Sci., 25(1)(2007), 167-172.
D.-W. Lee, Phantom maps from a strong homology viewpoint, Acta Mathematica Sinica, 22(3)(2006), 711-718.
D.-W. Lee, Strong homology, phantom groups and localization genera, Proceedings of Geometry and Topology, NIMS, 5(2006), 41-50.
D.-W. Lee, Homomorphic images and rationalizations based on the Eilenberg-MacLane spaces, Czechoslovak Mathematical Journal, 55(130) (2005), 465-470.
D.-W. Lee, Characterizations of phantom groups, Communications of the Korean Mathematical Society, 20(2)(2005), 359-364.
D.-W. Lee (with H. Lee), Pure extension product and derived limit, GP Jour. of Geometry and Topology, 5(1)(2005), 71-75.
D.-W. Lee, Phantom maps and the Gray index, Topology Appl. 138(3)(2004), 265-275.
D.-W. Lee, Homology theories and phantom maps, Far East J. Math. Sci., 9(3)(2004), 309-317.
D.-W. Lee, Essential maps and exact sequence in topological localizations, 1(1), 164-168.
D.-W. Lee, An analogue of Kunneth theorem in strong homology, Acta Mathematica Sci., 22(1), 2002, 32-40.
D.-W. Lee, The Mislin genus and the order on the Hurewicz homomorphism, JP Jour. Geometry and Topology, 2(3)(2002), 181-184.
D.-W. Lee, The zero map on rational homology, Far East J. Math. Sci., 7(2)(2002), 113-115.
D.-W. Lee, Strong homology,derived limit and strong cup product, Far East J. Math. Sci., Special Vol(1999), 319-338.
D.-W. Lee, Strictly derived groups and t-step strong homology groups, Far East J. Math. Sci., 6(3)(1998), 404-414.
D.-W. Lee, Construction of a ring, Far East J. Math. Sci., 6(1)(1998), 149-156.
D.-W. Lee (with H. Lee), Essential map and exact sequence in topological localizations, Honam Math. J. 1(1), 164-168.
D.-W. Lee, Pure extension, derived limit and strong homology, Korean Annals of Math., 17(1)(2000), 281-291.
D.-W. Lee (with H. Lee), Derived limits of inverse systems over (pre)ordered sets, Honam Math. J., 22(1)(2000), 77-82.
D.-W. Lee, Strong homology, derived limit and completion, Korean Annals of Math., 16(1)(1999), 145-155.
D.-W. Lee, Derived limit and groups of pure extensions, Honam Math. J., 21(1)(1999), 157-169.
D.-W. Lee, Derived cup product and (strictly) derived groups, Bull. Korean Math. Soc., 35(4)(1998), 791-807.
D.-W. Lee, Derived limits and strong r-stage homology groups, Korean Annals of Math., 15(1)(1998), 121-129.
D.-W. Lee, Pro-torsion products and Cech homology groups, Honam Math. J., 20(1)(1998), 121-138.
D.-W. Lee, Strong homology groups on the category Inv-Top, Pro-Top and Cph-Top, Bull. Honam Math. Soc., 14(1)(1997), 183-198.
D.-W. Lee, Strong homology groups w.r.t. a ring, Honam Math. J., 19(1)(1997), 131-138.
D.-W. Lee, Stable cohomotopy and (r-stage) strong homology groups, Bull. Honam Math. Soc., 13(1)(1996), 205-214.
D.-W. Lee (with H. Lee), On the strong homology groups, Honam Math. J.,18(1) (1996), 103-111.
D.-W. Lee (with H. Lee), Localization of morphisms in nilpotent CW-spaces, J. Sci Edu., 20(1)(1996), 31-343.
D.-W. Lee, An isomorphism on the spectral sequence, J. Sci Edu., 20(1)(1996), 7-10.
D.-W. Lee (with H. Lee), Exact sequences of the inverse limit functor and the n-the derived functor, Bull. Honam Math. Soc., 12(1)(1995), 215-223.
D.-W. Lee (with H. Lee), Relative epimorphisms and monomorphisms in category HCW and (co)Hop an objects, J. Sci Edu., 19(1)(1994), 19 -22.
D.-W. Lee, Digital H-spaces and actions in the pointed digital homotopy category, Applicable Algebra in Engineering, Communication and Computing, 31 (2) (2020), 149-169.
D.-W. Lee, Algebraic loop structures on algebra comultiplications, Open Mathematics, 17 (2019), 742-757.
D.-W. Lee (with J.P.C. Greenlees), The representation-ring-graded local cohomology spectral sequence for BPR<3 >, Communications in Algebra, 47 (6) (2019), 2396-2411.
D.-W. Lee (with S. Lee), Homotopy comultiplications on the k-fold wedge of spheres, Topology and its Applications 254 (2019), 145-170.
D.-W. Lee, Near-rings on digital Hopf groups, Applicable Algebra in Engineering, Communication and Computing, 29 (2018), 261-282.
D.-W. Lee (with Y.-J. Kim and O.-N. Lee), On the commutative comultiplications on a wedge of spheres, Far East Journal of Mathematical Sciences (FJMS), 103(9) (2018), 1279-1288.
D.-W. Lee (with Y.-J. Kim and O.-N. Lee), An associative comultiplications on a wedge of spheres, Far East Journal of Mathematical Sciences (FJMS), 103(8) (2018), 1279-1288.
D.-W. Lee, On the digitally quasi comultiplications of digital images, Filomat, 31(7) (2017), 1875-1892.
D.-W. Lee, Exact sequences on localizations, Far East Journal of Mathematical Sciences (FJMS), 100(12) (2016), 2169-2174.
D.-W. Lee, On the same n-types for the wedges of the Eilenberg-MacLane spaces, Chinese Annals of Mathematics, Series B, 37(6) (2016), 951-962.
D.-W. Lee, Comultiplication structures for a wedge of spheres, Filomat, 30(13) (2016), 3525-3546.
D.-W. Lee, On the quadratic cohomology algebra comultiplications, JP Journal of Geometry and Topology, 17(1) (2015), 49-62.
D.-W. Lee, On the generalized same N-type conjecture, Mathematical Proceedings of the Cambridge Philosophical Society, 157(5) (2014), 329-344.
D.-W. Lee, Digital singular homology groups of digital images, Far East Journal of Mathematical Sciences(FJMS), 88(1) (2014), 39-63.
D.-W. Lee, On inverses and algebraic loops of co-H-spaces, Acta Mathematica Scientia, 34(4) (2014), 1193-1211.
D.-W. Lee (with S.-Y. Lee), Group structures and actions of an automorphism group on the set of Lie algebra comultiplications, FJMS, 87(1) (2014), 75-88.
D.-W. Lee, Algebraic structures based on a classifying space of a compact Lie groups, Abstract and Applied Analysis, Volume 2013, Article ID 508450, 7 pages.
D.-W. Lee, On the same $n$-type of the suspension of the infinite quaternionic projective space, J. Pure Appl. Algebra, 217(2013), 1325-1334.
D.-W. Lee, An essential map whose localization is trivial, Far East Journal of Mathematical Sciences, 71(2)(2012), 399-403.
D.-W. Lee (with H.-S. Yoo), Equivalences in the derived limits, JP Journal of Geometry and Topology, 12(1)(2012), 99-110.
D.-W. Lee (with M. Arkowitz), Comultiplications on a wedge of two spheres, Science in China A-Mathematics, 54(2011), 9-22. doi:10.1007/s11425-010-4061-0.
D.-W. Lee, On the same n-type structure for the suspension of the Eilenberg-Mac Lane spaces, Journal of Pure and Applied Algebra (2010), 214(2010), 2027-2032, doi:10.10.16/j.jpaa.2010.02.007.
D.-W. Lee (with M. Arkowitz), Properties of comultiplications on a wedge of spheres, Topology and its Applications (2010), doi:10.10.16/j.topol.2010.03.001.
D.-W. Lee, On ring structures under strong cup products, Communications in Algebra, 38(2010), 964-980.
D.-W. Lee, On the same n-type conjecture for the suspension of the infinite complex projective space, Proc. Amer. Math. Soc., 137(3)(2009), 1161-1168.
D.-W. Lee, On the same homotopy types, self-maps and rational morphisms, Far East J. Math. Sci., 30(2)(2008), 205-209.
D.-W. Lee, On first derived limits, Far East J. Math. Sci., 25(1)(2007), 167-172.
D.-W. Lee, Phantom maps from a strong homology viewpoint, Acta Mathematica Sinica, 22(3)(2006), 711-718.
D.-W. Lee, Strong homology, phantom groups and localization genera, Proceedings of Geometry and Topology, NIMS, 5(2006), 41-50.
D.-W. Lee, Homomorphic images and rationalizations based on the Eilenberg-MacLane spaces, Czechoslovak Mathematical Journal, 55(130) (2005), 465-470.
D.-W. Lee, Characterizations of phantom groups, Communications of the Korean Mathematical Society, 20(2)(2005), 359-364.
D.-W. Lee (with H. Lee), Pure extension product and derived limit, GP Jour. of Geometry and Topology, 5(1)(2005), 71-75.
D.-W. Lee, Phantom maps and the Gray index, Topology Appl. 138(3)(2004), 265-275.
D.-W. Lee, Homology theories and phantom maps, Far East J. Math. Sci., 9(3)(2004), 309-317.
D.-W. Lee, Essential maps and exact sequence in topological localizations, 1(1), 164-168.
D.-W. Lee, An analogue of Kunneth theorem in strong homology, Acta Mathematica Sci., 22(1), 2002, 32-40.
D.-W. Lee, The Mislin genus and the order on the Hurewicz homomorphism, JP Jour. Geometry and Topology, 2(3)(2002), 181-184.
D.-W. Lee, The zero map on rational homology, Far East J. Math. Sci., 7(2)(2002), 113-115.
D.-W. Lee, Strong homology,derived limit and strong cup product, Far East J. Math. Sci., Special Vol(1999), 319-338.
D.-W. Lee, Strictly derived groups and t-step strong homology groups, Far East J. Math. Sci., 6(3)(1998), 404-414.
D.-W. Lee, Construction of a ring, Far East J. Math. Sci., 6(1)(1998), 149-156.
D.-W. Lee (with H. Lee), Essential map and exact sequence in topological localizations, Honam Math. J. 1(1), 164-168.
D.-W. Lee, Pure extension, derived limit and strong homology, Korean Annals of Math., 17(1)(2000), 281-291.
D.-W. Lee (with H. Lee), Derived limits of inverse systems over (pre)ordered sets, Honam Math. J., 22(1)(2000), 77-82.
D.-W. Lee, Strong homology, derived limit and completion, Korean Annals of Math., 16(1)(1999), 145-155.
D.-W. Lee, Derived limit and groups of pure extensions, Honam Math. J., 21(1)(1999), 157-169.
D.-W. Lee, Derived cup product and (strictly) derived groups, Bull. Korean Math. Soc., 35(4)(1998), 791-807.
D.-W. Lee, Derived limits and strong r-stage homology groups, Korean Annals of Math., 15(1)(1998), 121-129.
D.-W. Lee, Pro-torsion products and Cech homology groups, Honam Math. J., 20(1)(1998), 121-138.
D.-W. Lee, Strong homology groups on the category Inv-Top, Pro-Top and Cph-Top, Bull. Honam Math. Soc., 14(1)(1997), 183-198.
D.-W. Lee, Strong homology groups w.r.t. a ring, Honam Math. J., 19(1)(1997), 131-138.
D.-W. Lee, Stable cohomotopy and (r-stage) strong homology groups, Bull. Honam Math. Soc., 13(1)(1996), 205-214.
D.-W. Lee (with H. Lee), On the strong homology groups, Honam Math. J.,18(1) (1996), 103-111.
D.-W. Lee (with H. Lee), Localization of morphisms in nilpotent CW-spaces, J. Sci Edu., 20(1)(1996), 31-343.
D.-W. Lee, An isomorphism on the spectral sequence, J. Sci Edu., 20(1)(1996), 7-10.
D.-W. Lee (with H. Lee), Exact sequences of the inverse limit functor and the n-the derived functor, Bull. Honam Math. Soc., 12(1)(1995), 215-223.
D.-W. Lee (with H. Lee), Relative epimorphisms and monomorphisms in category HCW and (co)Hop an objects, J. Sci Edu., 19(1)(1994), 19 -22.
(International) Conferences or Invited Talks
D.-W. Lee (with S.-Y. Lee), Homotopy comultiplications on the $k$-fold wedge of spheres, CMS-HMS Joint Conference, June 13-15, 2019.
D.-W. Lee, Rational homotopy and equivariant cohomology theories I, II, Chungnam National University Colloquium, September 28, 2018.
D.-W. Lee, On the local cohomology spectral sequence for the Brown-Peterson spectrum, 2018 International Conference of the Honam-Youngnam Mathematical Societies, June 21-24, 2018.
D.-W. Lee, On the Steenrod (co)homology, rational homotopy theories and the local cohomology spectral sequences for the Brown-Peterson spectra, Intergral Geometry and Related Topics, Research Institute of Real and Complex Manifolds, April 23-24, 2018.
D.-W. Lee, On the rational homotopy theory and the local cohomology spectral sequences for the Brown-Peterson spectra, 2017 IPAM Conference, December, 8, 2017.
D.-W. Lee, The Brown-Peterson spectra, The Korean Mathematical Society Fall Meeting (2017 KMS Annual Meeting), October 27-29, 2017.
D.-W. Lee, On the Steenrod homology, co-Hopf structures, SNT and the Brown-Peterson spectra, The TTT(Transpennine Triangle Topology) 104 Conference, July 18-20, United Kingdom, 2017.
D.-W. Lee, Strong homology, phantom maps, comultiplications and same n-types, 2016 University of Sheffield Topology Conference, November 13-15, United Kingdom, 2016.
D.-W. Lee, Strong homology groups, phantom maps, comultiplications and same n-types, 2015 Annual Meeting of the Korean Mathematical Society, October 23-25, 2015.
D.-W. Lee (with J. -E. Lim), Comultiplications on the cohomology algebras, 2015 Annual Meeting of the Honam Mathematical Society, June 19-20, 2015.
D.-W. Lee, Comultiplication structures on a wedge of spheres, 2015 International Conference of the Chungcheong Mathematical Society, June 12-13, 2015
D.-W. Lee, On the same n-type structures for the suspension of the Eilenberg-MacLane spaces, 2015 KMS Spring Meeting, April 24-26, 2015.
D.-W. Lee, Phantom maps, co-H-spaces and the same $n$-types, 2014 NIMS Conference, December 19, 2014
D.-W. Lee, Algebraic loops, comultiplications and same n-types on CW-spaces, 2014 International Conference of the Honam Mathematical Society, June 26-28, 2014.
D.-W. Lee, Algebraic structures on phantom maps, co-H-spaces and same n-type, 2014 Conference of the Chonnam National University, February 7, 2014.
D.-W. Lee, Comultiplications and the same n-type structures of CW-spaces, 2013 Fall Conference of the Sogang University, December 12, 2013.
D.-W. Lee, On the same n-type structures of CW-complexes, 2013 Annual Meeting of the Honam Mathematical Society, June 14-15, 2013.
D.-W. Lee, Topology of phantom maps, comultiplications and same n-types, Colloquium at Kunsan National Univ. November 22, 2012.
D.-W. Lee, On the same n-type of CW-spaces, 2012 International Conference of the Honam Mathematical Society, June 15-17, 2012.
D.-W. Lee, On the comultiplications on the wedge of two spheres, 2012 International Conference of the Honam Mathematical Society, June 15-17, 2012.
D.-W. Lee, Comultiplications on a wedge of spheres, The Korean Mathematical Society Fall Meeting, October 21-22, 2011.
D.-W. Lee, On the Steenrod cohomology, same n-types and co-H-spaces, 2011 Annual Meeting of the Honam Mathematical Society and Symposium of Mathematics Education, June 17-28, 2011.
D.-W. Lee, Generalized same n-type conjectures of CW-spaces, 2010 Global KMS International Conference, October 22-23, 2010.
D.-W. Lee, Comultiplications and same n-type conjectures of CW-spaces, 2010 International Conference of the Honam Mathematical Societyg, June 16-19, 2010.
D.-W. Lee, On the strong cup products and co-H-group structures, IPAM Conference, April 15, 2010.
D.-W. Lee, On the same n-type conjecture for CW-spaces, Joint Meeting of the Korean Mathematical Society and the American Mathematical Society, Dec. 16-20, 2009.
D.-W. Lee, On strong homology, phantom maps and the same n-type problems, Colloquium at Dartmouth College, Oct. United States, 2008.
D.-W. Lee, On the Steenrod cohomology, phantom maps and the same n-type problems, NIMS, Feb. 2008.
D.-W. Lee, Functors on inverse systems and phantom groups and the localization genera, NIMS, Nov. 2006.
D.-W. Lee, Strong homology, phantom map and the same n-type conjecture, Topology Symposium at Chungnam National Univ. Sep. 2006.
D.-W. Lee, The answer to the same n-type conjecture, Colloquium at Chonbuk National Univ. Dec. 2005.
D.-W. Lee, Strong homology, the Gray index and the SNT conjecture, International Math. Conference Relating to Clay Problems, Aug. 2004.
D.-W. Lee, Phantom group, the Mislin genus and the SNT conjecture, Fall Conference of the KMS, Oct. 2004.
D.-W. Lee, Strong homology, phantom maps and the SNT conjecture, Colloquium at Kyungbuk National Univ. Feb. 2004.
D.-W. Lee, Topological localizations and rationally non-trivial Whitehead products, Conference of the HMS, Jul. 2003.
D.-W. Lee, Phantom maps and topological localizations from a homotopy point of view, Fall Conference of the KMS, Oct. 2002.
D.-W. Lee, Phantom map, strong homology and Mislin genus, Conference of the HMS, Jul. 2002.
D.-W. Lee, The Kunneth theorem in strong homology and the same n-type problems, Colloquium at Chonbuk National Univ. Nov. 2001.
D.-W. Lee, The SNT conjecture, Fall Conference of the KMS, Oct. 2001.
D.-W. Lee, Derived limits, strong homology and phantom maps, Colloquium on lgebraic Topology at Wayne State University, Feb. United States, 2000.
D.-W. Lee, Derived limits of some inverse systems, Conference of the HMS, Jul. 2000.
D.-W. Lee, Derived limits, strong homologies and pure extensions, Topology Symposium, Jun. 1999.
D.-W. Lee, Strong homology and strictly derived limit, Seminar at Chonbuk National Univ., Jan. 1999.
D.-W. Lee, T-step strong homology and strictly derived functors, Topology Seminar of the KMS, Apr. 1998.
D.-W. Lee, Strong homology groups and strictly derived functor, Fall Conference of the KMS, Oct. 1997.
D.-W. Lee, The construction of strong cochain rings, Conference of the HMS, Jun. 1997.
D.-W. Lee, Exact sequences for the stable cohomotopy and (r-stage) strong homology groups, Conference of the KMS, Oct. 1996.
D.-W. Lee, Exact sequences for the (r-stage) strong homology groups and the derived functor, Conference of the HMS, Jun. 1996.
D.-W. Lee, Some remarks of the 4-term exact sequence, Conference of the KMS, Oct. 1995.
D.-W. Lee, Homotopy monomorphisms(or epimorphisms) in the category HCW and its applications, Conference of the HMS, Jun. 1995.
D.-W. Lee, Rational homotopy and equivariant cohomology theories I, II, Chungnam National University Colloquium, September 28, 2018.
D.-W. Lee, On the local cohomology spectral sequence for the Brown-Peterson spectrum, 2018 International Conference of the Honam-Youngnam Mathematical Societies, June 21-24, 2018.
D.-W. Lee, On the Steenrod (co)homology, rational homotopy theories and the local cohomology spectral sequences for the Brown-Peterson spectra, Intergral Geometry and Related Topics, Research Institute of Real and Complex Manifolds, April 23-24, 2018.
D.-W. Lee, On the rational homotopy theory and the local cohomology spectral sequences for the Brown-Peterson spectra, 2017 IPAM Conference, December, 8, 2017.
D.-W. Lee, The Brown-Peterson spectra, The Korean Mathematical Society Fall Meeting (2017 KMS Annual Meeting), October 27-29, 2017.
D.-W. Lee, On the Steenrod homology, co-Hopf structures, SNT and the Brown-Peterson spectra, The TTT(Transpennine Triangle Topology) 104 Conference, July 18-20, United Kingdom, 2017.
D.-W. Lee, Strong homology, phantom maps, comultiplications and same n-types, 2016 University of Sheffield Topology Conference, November 13-15, United Kingdom, 2016.
D.-W. Lee, Strong homology groups, phantom maps, comultiplications and same n-types, 2015 Annual Meeting of the Korean Mathematical Society, October 23-25, 2015.
D.-W. Lee (with J. -E. Lim), Comultiplications on the cohomology algebras, 2015 Annual Meeting of the Honam Mathematical Society, June 19-20, 2015.
D.-W. Lee, Comultiplication structures on a wedge of spheres, 2015 International Conference of the Chungcheong Mathematical Society, June 12-13, 2015
D.-W. Lee, On the same n-type structures for the suspension of the Eilenberg-MacLane spaces, 2015 KMS Spring Meeting, April 24-26, 2015.
D.-W. Lee, Phantom maps, co-H-spaces and the same $n$-types, 2014 NIMS Conference, December 19, 2014
D.-W. Lee, Algebraic loops, comultiplications and same n-types on CW-spaces, 2014 International Conference of the Honam Mathematical Society, June 26-28, 2014.
D.-W. Lee, Algebraic structures on phantom maps, co-H-spaces and same n-type, 2014 Conference of the Chonnam National University, February 7, 2014.
D.-W. Lee, Comultiplications and the same n-type structures of CW-spaces, 2013 Fall Conference of the Sogang University, December 12, 2013.
D.-W. Lee, On the same n-type structures of CW-complexes, 2013 Annual Meeting of the Honam Mathematical Society, June 14-15, 2013.
D.-W. Lee, Topology of phantom maps, comultiplications and same n-types, Colloquium at Kunsan National Univ. November 22, 2012.
D.-W. Lee, On the same n-type of CW-spaces, 2012 International Conference of the Honam Mathematical Society, June 15-17, 2012.
D.-W. Lee, On the comultiplications on the wedge of two spheres, 2012 International Conference of the Honam Mathematical Society, June 15-17, 2012.
D.-W. Lee, Comultiplications on a wedge of spheres, The Korean Mathematical Society Fall Meeting, October 21-22, 2011.
D.-W. Lee, On the Steenrod cohomology, same n-types and co-H-spaces, 2011 Annual Meeting of the Honam Mathematical Society and Symposium of Mathematics Education, June 17-28, 2011.
D.-W. Lee, Generalized same n-type conjectures of CW-spaces, 2010 Global KMS International Conference, October 22-23, 2010.
D.-W. Lee, Comultiplications and same n-type conjectures of CW-spaces, 2010 International Conference of the Honam Mathematical Societyg, June 16-19, 2010.
D.-W. Lee, On the strong cup products and co-H-group structures, IPAM Conference, April 15, 2010.
D.-W. Lee, On the same n-type conjecture for CW-spaces, Joint Meeting of the Korean Mathematical Society and the American Mathematical Society, Dec. 16-20, 2009.
D.-W. Lee, On strong homology, phantom maps and the same n-type problems, Colloquium at Dartmouth College, Oct. United States, 2008.
D.-W. Lee, On the Steenrod cohomology, phantom maps and the same n-type problems, NIMS, Feb. 2008.
D.-W. Lee, Functors on inverse systems and phantom groups and the localization genera, NIMS, Nov. 2006.
D.-W. Lee, Strong homology, phantom map and the same n-type conjecture, Topology Symposium at Chungnam National Univ. Sep. 2006.
D.-W. Lee, The answer to the same n-type conjecture, Colloquium at Chonbuk National Univ. Dec. 2005.
D.-W. Lee, Strong homology, the Gray index and the SNT conjecture, International Math. Conference Relating to Clay Problems, Aug. 2004.
D.-W. Lee, Phantom group, the Mislin genus and the SNT conjecture, Fall Conference of the KMS, Oct. 2004.
D.-W. Lee, Strong homology, phantom maps and the SNT conjecture, Colloquium at Kyungbuk National Univ. Feb. 2004.
D.-W. Lee, Topological localizations and rationally non-trivial Whitehead products, Conference of the HMS, Jul. 2003.
D.-W. Lee, Phantom maps and topological localizations from a homotopy point of view, Fall Conference of the KMS, Oct. 2002.
D.-W. Lee, Phantom map, strong homology and Mislin genus, Conference of the HMS, Jul. 2002.
D.-W. Lee, The Kunneth theorem in strong homology and the same n-type problems, Colloquium at Chonbuk National Univ. Nov. 2001.
D.-W. Lee, The SNT conjecture, Fall Conference of the KMS, Oct. 2001.
D.-W. Lee, Derived limits, strong homology and phantom maps, Colloquium on lgebraic Topology at Wayne State University, Feb. United States, 2000.
D.-W. Lee, Derived limits of some inverse systems, Conference of the HMS, Jul. 2000.
D.-W. Lee, Derived limits, strong homologies and pure extensions, Topology Symposium, Jun. 1999.
D.-W. Lee, Strong homology and strictly derived limit, Seminar at Chonbuk National Univ., Jan. 1999.
D.-W. Lee, T-step strong homology and strictly derived functors, Topology Seminar of the KMS, Apr. 1998.
D.-W. Lee, Strong homology groups and strictly derived functor, Fall Conference of the KMS, Oct. 1997.
D.-W. Lee, The construction of strong cochain rings, Conference of the HMS, Jun. 1997.
D.-W. Lee, Exact sequences for the stable cohomotopy and (r-stage) strong homology groups, Conference of the KMS, Oct. 1996.
D.-W. Lee, Exact sequences for the (r-stage) strong homology groups and the derived functor, Conference of the HMS, Jun. 1996.
D.-W. Lee, Some remarks of the 4-term exact sequence, Conference of the KMS, Oct. 1995.
D.-W. Lee, Homotopy monomorphisms(or epimorphisms) in the category HCW and its applications, Conference of the HMS, Jun. 1995.
Research Grants (as the Principal Investigator)
D.-W. Lee,
Algebraic comultiplciations, same n-types, local cohomology spectral sequences for the Brown-Peterson spectra and their applications
Project No.: 2018R1A2B6004407 (5 years)
Period : March 1, 2018 - February 28, 2023 supported by NRF .
D.-W. Lee, Co-Hopf spaces and homotopy same n-types, and their applications
Project No.: 2015R1D1A1A09057449 (3 years)
Period : November 1, 2015 - October 31, 2018 supported by NRF .
D.-W. Lee, Comultiplications and same n-type structures
Project No.: 2010-0022035 (5 years)
Period : September 1, 2010 - August 31, 2015 supported by NRF .
D.-W. Lee, Phantom maps, SNT problems and the Mislin genus
Project No.: 202-2002-1-C00039 (2 years)
Period : September 1, 2002 - August 31, 2004 supported by NRF .
D.-W. Lee, Strong homology groups and derived limits
Project No.: 214-1999- 2-C00007
Period : August 1, 2000 - July 31, 2001 supported by NRF .
D.-W. Lee, Strong Homology Groups on the Category inv-Top, pro-Top and CPH-Top
Project No.: 037-1996-1-D00320
Period : January 1, 1997 - December 31, 1997 supported by NRF .
Project No.: 2018R1A2B6004407 (5 years)
Period : March 1, 2018 - February 28, 2023 supported by NRF .
D.-W. Lee, Co-Hopf spaces and homotopy same n-types, and their applications
Project No.: 2015R1D1A1A09057449 (3 years)
Period : November 1, 2015 - October 31, 2018 supported by NRF .
D.-W. Lee, Comultiplications and same n-type structures
Project No.: 2010-0022035 (5 years)
Period : September 1, 2010 - August 31, 2015 supported by NRF .
D.-W. Lee, Phantom maps, SNT problems and the Mislin genus
Project No.: 202-2002-1-C00039 (2 years)
Period : September 1, 2002 - August 31, 2004 supported by NRF .
D.-W. Lee, Strong homology groups and derived limits
Project No.: 214-1999- 2-C00007
Period : August 1, 2000 - July 31, 2001 supported by NRF .
D.-W. Lee, Strong Homology Groups on the Category inv-Top, pro-Top and CPH-Top
Project No.: 037-1996-1-D00320
Period : January 1, 1997 - December 31, 1997 supported by NRF .