Counting perfect matchings in polyominoes with an application to the dimer problem
P. John, H. Sachs, H. Zernitz (1987)
Applicationes Mathematicae
Similarity:
The search session has expired. Please query the service again.
The search session has expired. Please query the service again.
The search session has expired. Please query the service again.
The search session has expired. Please query the service again.
The search session has expired. Please query the service again.
The search session has expired. Please query the service again.
The search session has expired. Please query the service again.
The search session has expired. Please query the service again.
P. John, H. Sachs, H. Zernitz (1987)
Applicationes Mathematicae
Similarity:
M. N. Mukherjee, S. Raychaudhuri (1993)
Matematički Vesnik
Similarity:
G. L. Garg, B. Kumar (1989)
Matematički Vesnik
Similarity:
I. Lončar (1985)
Matematički Vesnik
Similarity:
Tošić, Ratko, Vojvodić, Dušan (2000)
Novi Sad Journal of Mathematics
Similarity:
Tomohiro Yamada (2005)
Colloquium Mathematicae
Similarity:
We show that there is an effectively computable upper bound of odd perfect numbers whose Euler factors are powers of fixed exponent.
Ivan Gutman (1991)
Publications de l'Institut Mathématique
Similarity:
Giorgio Nordo (1997)
Commentationes Mathematicae Universitatis Carolinae
Similarity:
In this paper we generalize the notion of of a Tychonoff space to a generic extension of any space by introducing the concept of . This allow us to simplify the treatment in a basic way and in a more general setting. Some [S], [S], and [D]’s results are improved and new characterizations for perfect (Hausdorff) extensions of spaces are obtained.
Min Tang, Xiao-Zhi Ren, Meng Li (2013)
Colloquium Mathematicae
Similarity:
For a positive integer n, let σ(n) denote the sum of the positive divisors of n. Let d be a proper divisor of n. We call n a near-perfect number if σ(n) = 2n + d, and a deficient-perfect number if σ(n) = 2n - d. We show that there is no odd near-perfect number with three distinct prime divisors and determine all deficient-perfect numbers with at most two distinct prime factors.
Garg, G.L., Goel, Asha (1995)
International Journal of Mathematics and Mathematical Sciences
Similarity:
J. Chaber (1984)
Fundamenta Mathematicae
Similarity: