TSUCHIYA Morimasa

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Name
TSUCHIYA Morimasa
Affiliation
Tokai University
Section
School of Science, Department of Mathematical Sciences
Job title
Professor
Degree
Master of Science(Tokai University), Doctor of Science(Tokai University)

Research Interests

 
 

Published Papers

 
2-upper bound graphs of posets
Gen Kawatani, Kenjiro Ogawa, Morimasa Tsuchiya
Ars Combinatoria   140 173-182   Jul 2018   [Refereed]
Note on p-Competition Graphs and Paths
Yasuhisa Kidokoro, Kenjiro Ogawa, Satoshi Tagusari, Morimasa Tsuchiya
Southeast Asian Bulletin of Mathematics   42 575-584   Jul 2018   [Refereed]
On strict semibound graphs of posets
Kenjiro Ogawa, Satoshi Tagusari, Morimasa Tsuchiya
JCMCC   100 45-54   Feb 2017   [Refereed]
On strict-double-bound numbers of caterpillars
Kenjiro Ogawa, Yuhei Shiraki, Satoshi Tagusari, Morimasa Tsuchiya
Discrete Mathematics, Algotithms and Applications   7 1-7   Sep 2015   [Refereed]
Note on strict-double-bound graphs and numbers
Kenjiro Ogawa, Satoshi Tagusari, Morimasa Tsuchiya
AKCE International Journal of Graphs and Combinatorics   11 127-132   Nov 2014   [Refereed]
On strict-double-bound numbers of complete graphs missing four edegs
Kenjiro Ogawa, Keisuke Kanada, Kanosa Kushima, Satoshi Tagusari, Morimasa Tsuchiya
Bulletin of the Institute of Combinatorics and its Appilcations   68 79-89   May 2013   [Refereed]
On strict-double-bound numbers of spiders and ladders
Syota Konishi, Kenjiro Ogawa, Satoshi Tagusari, Morimasa Tsuchiya
Ars Combinatoria   108 249-255   Jan 2013   [Refereed]
Note on strict-double-bound numbers of paths, cycles, and wheels
Shota Konishi, Kenjiro Ogawa, Satoshi Tagusari, Morimasa Tsuchiya
JCMCC   83 205-210   Dec 2012   [Refereed]
Note on strict-double-bound numbers of nearly complete graphs missing some edges
Kenjiro Ogawa, Ryoko Soejima, Satoshi Tagusari, Morimasa Tsuchiya
Discrete Mathematics   312 584-587   Dec 2011   [Refereed]
On posets with double bound graphs which contain a star graphs as an induced subgraph
Kenjiro Ogawa, Satoshi Tagusari, Morimasa Tsuchiya
Southeast Asian Bulletin of Mathematics   34 1063-1075   Dec 2010   [Refereed]
On distance two graphs of upper bound graphs
Kenjiro Ogawa, Satoshi Tagusari, Morimasa Tsuchiya
Discrete Mathematics   310 3276-3277   Sep 2010   [Refereed]
On double bound graphs and forbidden subposets
Kenjiro Ogawa, Satoshi Tagusari, Morimasa Tsuchiya
Discrete Mathematics   309 6353-6358   Dec 2009   [Refereed]
Note on upper bound graphs and forbidden subposets
Kenjiro Ogawa, Satoshi Tagusari, Morimasa Tsuchiya
Discrete Mathematics   309 3659-3663   Jun 2009   [Refereed]
A note on some kinds of hereditary bound graphs
Hiroshi Era, Kenjiro Ogawa, Morimasa Tsuchiya
Utilitas Mathematics   77 55-63   Dec 2008   [Refereed]
A note on chordal bound graphs and posets
Shin-ichi Iwai, Kenjiro Ogawa, Morimasa Tsuchiya
Discrete Mathematics   308 955-961   Jan 2008   [Refereed]
Note on transformations of posets with the same upper bound graph and minimal elements
Kenjiro Ogawa, Morimasa Tsuchiya
Bulletin of Malaysian Mathematical Science Society (Second Series)   29 179-182   Dec 2006   [Refereed]
Note on Distances of Posets whose Double Bound Graphs are the Same
Kenjiro Ogawa, Morimasa Tsuchiya
Utilitas Mathematica   67 153-160   Jun 2005   [Refereed]
Note on Transformation of Posets with the Same Semi Bound Graphs
Hiroshi Era, Kenjiro Ogawa, Morimasa Tsuchiya
Ars Combinatoria   76 177-184   Jul 2005   [Refereed]
A Characterization of Semi Bound Graphs
Hiroshi Era, Kenjiro Ogawa, Morimasa Tsuchiya
Bulletin of Malaysian Mathematical Science Society (Second Series)   27 27-33   Jun 2004   [Refereed]
Note on Construction Methods of Upper Bound Graphs
Hiroshi Era, Shin-ichi Iwai, Kenjiro Ogawa, Morimasa Tsuchiya
AKCE International Journal of Graphs and Combinatorics   1 103-108   Dec 2004   [Refereed]
A note on bound graphs and clique covers
shin-ichi Iwai, Kenjiro Ogawa and Morimasa Tsuchiya
JCMCC   44(44) 97-101   Mar 2003   [Refereed]
On k-th Powers of Upper Bound Graphs
Morimasa Tsuchiya
Annals of Combinatorics   7 495-498   Dec 2003   [Refereed]
Note on Double Bound Graphs of Infinite Posets
Hiroshi Era, Kenjiro Ogawa, Morimasa Tsuchiya
Southeast Asian Bulletin of Mathematics   27 599-602   Dec 2003   [Refereed]
A Note on Hereditary Double Bound Graphs
Hiroshi Era, Shin-ichi Iwai, Kenjiro Ogawa, Morimasa Tsuchiya
Congressus Numerantium   165 123-127   Dec 2003   [Refereed]
On upper bound graphs with respect to unary operations on graphs
Hiroshi Era, Kenjiro Ogawa, Morimasa Tsuchiya
Annals of Combinatorics   6 1-6   Oct 2002   [Refereed]
Hiroshi Era, Kenjiro Ogawa, Morimasa Tsuchiya
Discrete Mathematics   235 215-220   May 2001   [Refereed]
On Double Bound Graphs with respect to Graph Operations
Shin-ichi Iwai, Kenjiro Ogawa, Morimasa Tsuchiya
Lecture Notes in Computer Sciences   2098 167-175   Jul 2001   [Refereed]
Note on Radius of Posets whose Double Bound Graphs are the Same
Shin-ichi Iwai, Kenjiro Ogawa and Morimasa Tsuchiya
文教大学情報学部「情報研究」   25 55-60   Mar 2000   [Refereed]
On Upper Bound Graphs with respect to Operations on Graphs
Hiroshi Era, Kenjiro Ogawa, Morimasa Tsuchiya
Theoretical Computer Sciences   235 219-223   Apr 2000   [Refereed]
A Note on Semi Bound Graphs
Hiroshi Era, Kenjiro Ogawa, Morimasa Tsuchiya
Congrssus Numerantium   145 129-135   Dec 2000   [Refereed]
On Intersection Numbers, Total Clique Covers and Regular Graphs
Morimasa Tsuchiya
JCMCC   30 33-43   Jun 1999   [Refereed]
On Regularity of Upper Bound Graphs and Double Bound Graphs
Morimasa Tsuchiya
Proceedings of the School of Science, Tokai University   34 13-16   Mar 1999   [Refereed]
On Upper Bound Graphs with respect to Line Graphs
Kenjiro Ogawa, Morimasa Tsuchiya
Southeast Asian Bulletin of Mathematics   23 265-269   Jun 1999   [Refereed]
On Some Families of Edge Magic Graphs
Morimasa Tsuchiya, Kuniharu Yokomura
Combinatorics, Graph Theory, and Algorithms, Volume Ⅱ   817-822   Jul 1999   [Refereed]
On Distances of Posets on Upper Bound Graph
Kenjiro Ogawa, Morimasa Tsuchiya
Research Communications of the Conference held in the Memory of Paul Erdos   201-203   Jul 1999   [Refereed]
On uniform intersection numbers
Morimasa Tsuchiya
Ars Combinatoria   48 225-232   Jul 1998   [Refereed]
On Upper Bound Graphs whose Complements are also Upper Bound Graphs
Hiroshi Era, Morimasa Tsuchiya
Discrete Mathematics   179 103-109   Mar 1998   [Refereed]
Remarks on Relations between Upper Bound Graphs and Double Bound Graphs
Hiroshi Era, Morimasa Tsuchiya
Proceedings of the School of Science, Tokai University   32 1-6   Mar 1997   [Refereed]
On Double Bound Graphs whose Complements are also Double Bound Graphs
Hiroshi Era, Morimasa Tsuchiya
Proceedings of the School of Science, Tokai University   31 25-29   Mar 1996   [Refereed]
On uniqueness of manifold posets and locally Cohen-Macaulay posets
Morimasa Tsuchiya
Southeast Asian Bulletin of Mathematics   20 13-17   Jun 1996   [Refereed]
On antichain intersection numbers, total clique covers and regular graphs
Morimasa Tsuchiya
Discrete Mathematics   127 305-318   Apr 1994   [Refereed]
Manifold Posets
Seiya Negami, Morimasa Tsuchiya
Journal of the Yokohama National University   41 23-32   Oct 1994   [Refereed]
On Bond Lattices of Graphs
Morimasa Tsuchiya
Chinese Journal of Mathematics   20 287-299   Oct 1992   [Refereed]
On Intersection Numbers of Graphs
Hiroshi Era, Morimasa Tsuhciya
Graph Theory, Combinatorics, Algorithms, and Applications   545-556   Nov 1991   [Refereed]
On Intersection Graphs with respect to Uniform Families
Hiroshi Era, Morimasa Tsuhciya
Utilitas Mathematica   37 3-12   May 1990   [Refereed]
On Intersection Graphs with respect to Antichains (II)
Morimasa Tsuchiya
Utilitas Mathematica   37 29-43   May 1990   [Refereed]
On Intersection Graphs with respect to antichains
Morimasa Tsuchiya
Utilitas Mathematica   35 177-184   May 1989   [Refereed]
On a Hereditary Poset
Hiroshi Narushima, Morimasa Tsuchiya
Proceedings of the Faculty of Science, Tokai University   24 1-7   Mar 1989   [Refereed]
The Order Complexes on the 2-­Sphere
Hiroshi Narushima, Morimasa Tsuchiya, Kei-ichi Watanabe
Proceedings of the Faculty of Science, Tokai University   23 1-7   Mar 1988   [Refereed]
A Graph­ Theoretical Characterization of the Order Complexes on the 2­-Sphere
Takayuki Hibi, Hiroshi Narushima, Morimasa Tsuchiya, Kei-ichi Watanabe
Discrete Mathematics   72 167-174   Oct 1988   [Refereed]
On Unstable Graphs
Morimasa Tsuchiya
Proceedings of the Faculty of Science, Tokai University   21 27-31   Mar 1986   [Refereed]
On determination of Graph G whose Bond Lattice L(G) is Modular
Morimasa Tsuchiya
Discrete Mathematics   56 79-81   Nov 1985   [Refereed]
A Note on Contractibility of Posets
Akira Koriyama, Morimasa Tsuchiya
Proceedings of the Faculty of Science ofTokai University   20 73-84   Mar 1985   [Refereed]
Another Proof of Bela Bollobas’ Theoremon Edge Disjoint Cycles
Morimasa Tsuchiya
Proceedings of the Faculty of Science of Tokai University   18 29-40   Mar 1983   [Refereed]

Misc

 
A Graph-theoretical characterization of the Order Complexes on the 2-sphere(共著)
Discrete Mathematics   72 167-174   1988
On Intersection Graphs with respect to antichains(Ⅱ)
Utilitas Mathematica   37 29-44   1990
On Intersection Graphs with respect to Uniform Families(共著)
Utilitas Mathematica   37 3-12   1990
On Intersection Numbers of Graphs(共著)
Graph Theory, Combinatorics, Algorithms, and Applications   545-556   1991
Another Proof of Bela Bolbbas Theorem of Edge Disjoint Cycles
Proceedings of the Faculty of Science, Tokai University   18 29-40   1983
A Note on Coutractibilty of Posets(共著)
Proceedings of the Faculty of Science, Tokai University   20 73-84   1985
The Order Complexes on the 2-Sphere(共著)
Proceedings of the Faculty of Science, Tokai University   23 1-7   1988
Manifold posets(共著)
Journal of Yokohama National University   (41) 23-32   1994
On double bound graphs whose complements are also double bound graphs(共著)
Proceedings of the School of Science, Tokai University School of Science, Tokai University   31 25-29   1996
Remarks on relations between upper bound graphs and double bound graphs(共著)
Proceedings of the School of Science, Tokai Univ   32 1-6   1997
On upper bound graphs whose complements are also upper bound graphs(共著)
Discrete Mathematics   (179) 103-109   1998
On k-th powers of upper bound graphs(共著)
グラフ理論とその応用の研究   192-195   1999
On Upper Bound Graphs with respect to Operations on Graphs(共著)
Theoretical Computer Sciences   (235) 219-223   2000
On distances of posets on upper bound graphs(共著)
Research Communications of the Conference held in the Memory of Paul Erdös   201-203   2000
On Some Families of Edge Magic Graphs(共著)
Combinatorics, Graph Theory, and Algorithms, Volume Ⅱ   817-822   1999
On upper bound graphs with respect to line graphs(共著)
Southeast Asian Bulletin of Mathematics   23 265-269   1999
On a Hereditary Poset(共著)
Proceedings of the Faculty of Science, Tokai University   24 1-7   1989
On Construction of Bound Graphs(共著)
Electronic Notes in Discrete Mathematics   5    2000
A Note on Semi Bound Graphs(共著)
Congressus Numerantium   145 129-135   2000
Note on Radius of Posets whose Double Bound Graphs are the Same
文教大学情報学部「情報研究」   (25) 55-60   2001
On Double Bound graphs with respect to graph operations(共著)
Lecture Notes in Computer Sciences   2098 167-175   2001
On construction of double bound graphs
Far East Journal of Applied Mathematics   (10) 161-168   2003

Works

 
Research of Discrete Geometry
1997
Research of Graph Theory and its Applications
1998
Combinatorics Methods of Discrete Geometry
2000