Hiroshi Era

According to our database, Hiroshi Era authored at least 11 papers between 1978 and 2005.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of two.

2005

On upper bound graphs with forbidden subposets.

Hiroshi Era, Kenjiro Ogawa, Satoshi Tagusari, Morimasa Tsuchiya

Electron. Notes Discret. Math., 2005

Note on transformation of posets with the same semi bound graphs.

Hiroshi Era, Kenjiro Ogawa, Morimasa Tsuchiya

Ars Comb., 2005

2002

A note on construction of upper bound graphs.

Hiroshi Era, Shin-ichi Iwai, Kenjiro Ogawa, Morimasa Tsuchiya

Electron. Notes Discret. Math., 2002

2001

On transformations of posets which have the same bound graph.

Hiroshi Era, Kenjiro Ogawa, Morimasa Tsuchiya

Discret. Math., 2001

2000

On upper bound graphs with respect to operations on graphs.

Hiroshi Era, Kenjiro Ogawa, Morimasa Tsuchiya

Theor. Comput. Sci., 2000

1998

On upper bound graphs whose complements are also upper bound graphs.

Hiroshi Era, Morimasa Tsuchiya

Discret. Math., 1998

1989

Path chromatic numbers of graphs.

Jin Akiyama, Hiroshi Era, Severino Villanueva Gervacio, Mamoru Watanabe

J. Graph Theory, 1989

1981

The cohesiveness of a point of a graph.

Jin Akiyama, Frank Boesch, Hiroshi Era, Frank Harary, Ralph Tindell

Networks, 1981

Further results on graph equations for line graphs and n-th power graphs.

Jin Akiyama, Hiroshi Era, Geoffrey Exoo

Discret. Math., 1981

Balancing signed graphs.

Jin Akiyama, David Avis, Vasek Chvátal, Hiroshi Era

Discret. Appl. Math., 1981

1978

A variant of inclusion-exclusion on semilattices.

Hiroshi Narushima, Hiroshi Era

Discret. Math., 1978