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Cover-incomparability graphs (C-I graphs, for short) are introduced, whose edge-set is the union of edge-sets of the incomparability and the cover graph of a poset. Posets whose C-I graphs areâ€¦ (More)

- Manoj Changat, Joseph Mathews
- Discrete Mathematics
- 1999

Convexity invariants like Caratheodory, Helly and Radon numbers are computed for triangle path convexity in graphs. Unlike minimal path convexities, the Helly and Radon numbers behave almostâ€¦ (More)

- Manoj Changat, G. N. Prasanth, Joseph Mathews
- Discrete Mathematics
- 2009

The geodesic and induced path transit functions are the two well-studied interval functions in graphs. Two important transit functions related to the geodesic and induced path functions are theâ€¦ (More)

- Manoj Changat, Joseph Mathews, Henry Martyn Mulder
- Discrete Applied Mathematics
- 2010

The induced path function J(u, v) of a graph consists of the set of all vertices lying on the induced paths between vertices u and v. This function is a special instance of a transit function. Theâ€¦ (More)

- Manoj Changat, Anandavally K. Lakshmikuttyamma, +4 authors Simon Spacapan
- Discrete Mathematics
- 2013

Let IG(x, y) and JG(x, y) be the geodesic and induced path interval between x and y in a connected graph G, respectively. The following three betweenness axioms are considered for a set V and R : V Ã—â€¦ (More)

- Bostjan Bresar, Manoj Changat, Tanja Gologranc, Joseph Mathews, Antony Mathews
- Discrete Applied Mathematics
- 2010

The problem of recognizing cover-incomparability graphs (i.e. the graphs obtained from posets as the edge-union of their covering and incomparability graph) was shown to be NP-complete in general [J.â€¦ (More)

- Taka. Sasaqui, Toshitaka Kajino, Joseph Mathews, Kyoichi Otsuki, Tomoki Nakamura
- 2005

National Astronomical Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan Department of Astronomy, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japanâ€¦ (More)

- Joseph Mathews
- 1997

In this paper we present the preliminary results of a model for the production of gamma-ray bursts (GRBs) through the compressional heating of binary neutron stars near their last stable orbit priorâ€¦ (More)

- Manoj Changat, Joseph Mathews, Henry Martyn Mulder
- Electronic Notes in Discrete Mathematics
- 2003

- Manoj Changat, Anandavally K. Lakshmikuttyamma, Joseph Mathews, Iztok Peterin, Prasanth G. Narasimha-Shenoi, Aleksandra Tepeh
- Discrete Mathematics
- 2011

The geodesic and geodesic interval, namely the set of all vertices lying on geodesics between a pair of vertices in a connected graph, is a part of folklore in metric graph theory. It is also knownâ€¦ (More)