Results 31 to 40 of about 1,229 (303)
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Sergei Izmalkov +2 more
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PERFECT AND ALMOST PERFECT HOMOGENEOUS POLYTOPES
18 pages, 2 ...
V. N. Berestovskiĭ, Yu. G. Nikonorov
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LetS be an assosiative ring with identitiy and N be a right S-module. We definethe non-maximal graph m(N) of N with all non-trivial submodules of N as verticesand two distinct vertices A,B areadjecent if and only if A + B is not maximal submodule of N ...
Erol Yılmaz, Ali Öztürk, Tahire Özen
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Distance perfectness of graphs
In this paper, we propose a generalization of well known kinds of perfectness of graphs in terms of distances between vertices. We introduce generalizations of α-perfect, χ-perfect, strongly perfect graphs and we establish the relations between them ...
Włoch, Andrzej
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Coloring of graph of ring with respect to idempotents [PDF]
Let $R$ be a ring with nonzero identity. A graph $G_{{\rm Id}}(R)$ of $R$ with respect to idempotents of $R$ has elements of $R$ as vertices and distinct vertices $x$, $y$ are adjacent if and only if $x + y$ is an idempotent of $R$.
Avinash Patil, Dipika Patil
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The cubic power graph of finite abelian groups
Let G be a finite abelian group with identity 0. For an integer the additive power graph of G is the simple undirected graph with vertex set G in which two distinct vertices x and y are adjacent if and only if x + y = nt for some with When the additive ...
R. Raveendra Prathap, T. Tamizh Chelvam
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Approximate truth of perfectness: An experimental test [PDF]
Approximate truth refers to the principle that border cases should be analyzed by solving generic cases and solving border cases as limits of generic ones (Brennan et al., 2008). Our study experimentally explores whether this conceptual principle is also
Berninghaus, Siegfried K. +4 more
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How perfect are perfect vortex beams? [PDF]
Perfect (optical) vortex (PV) beams are fields which are mooted to be independent of the orbital angular momentum (OAM) they carry. To date, the best experimental approximation of these modes is obtained from passing Bessel-Gaussian beams through a Fourier lens.
Jonathan Pinnell +2 more
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Best System of Creation according to Transcendent Philosophy [PDF]
Best system of creation means the best and most perfect system that God created. The question is that whether this actual creation system is the most perfect possible world or not.
sayyad hasan bathayi
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Perfect Matchings and Perfect Powers [PDF]
In the last decade there have been many results about special families of graphs whose number of perfect matchings is given by perfect or near perfect powers. In this paper we present an approach that allows proving them in a unified way. We use this approach to prove a conjecture of James Propp stating that the number of tilings of the so-called Aztec
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