On a conjecture of C. L. Wang

On a conjecture of wang and williams

✍ N. V. R. Mahadev; Uri N. Peled 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 210 KB

## Abstract Wang and Williams defined a __threshold assignment__ for a graph __G__ as an assignment of a non‐negative weight to each vertex and edge of __G__, and a threshold __t__, such that a set __S__ of vertices is stable if and only if the total weight of the subgraph induced by __S__ does not

Falsity of Wang's conjecture on stars

✍ C.S.Karuppan Chetty; S.Maria Arulraj 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 276 KB

Let Q,, denote the set of all n x n doubly stochastic matrices. E.T.H. Wang called a matrix B C Q,, a star if per(:cB + ( 1 -:¢)A) ~< c¢ per(B) + (1 ~) per(A) for all A C f~. and for all :~ E [0, 1] and conjectured in 1979 that for n/> 3, permutation matrices are the only stars. In this paper we dis

A Proof of a Conjecture of C.L. Siegel

✍ J.T. Ding 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 243 KB

Let \(M_{n}\) be the Minkowski fundamental domain for the space of \(n \times n\) real, symmetric, and positive definite matrices under the action of the unimodular group \(S L_{n}(Z)\). C. L. Siegel conjectured that \(d(A, B)-f(A, B) \leqslant C(n)\), for \(A, B \in M_{n}\), where \(d\) and \(f\) a

On a conjecture of C.N. Yang

✍ J.S. Bell 📂 Article 📅 1962 🏛 Elsevier Science ⚖ 74 KB

On a conjecture of Wolansky

✍ Guofang Wang; Jun-Cheng Wei 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 113 KB

On a conjecture of C.W. Norman, I

✍ Noboru Ito 📂 Article 📅 1979 🏛 Elsevier Science 🌐 English ⚖ 728 KB