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Published in 2017 at "Journal of Mathematical Sciences"
DOI: 10.1007/s10958-017-3414-4
Abstract: New proofs of theorems on graph operations that do not affect the structure of the sandpile groups of graphs are suggested. The proofs are based on the isomorphism between the sandpile group and the Kirchhoff…
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Keywords:
theorems graph;
affect structure;
operations affect;
structure sandpile ... See more keywords
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1
Published in 2022 at "Nonlinearity"
DOI: 10.1088/1361-6544/acc5d4
Abstract: In this paper we prove Morse index theorems for a big class of constrained variational problems on graphs. Such theorems are useful in various physical and geometric applications. Our formulas compute the difference of Morse…
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Keywords:
parametrized optimal;
index;
graph parametrized;
theorems graph ... See more keywords
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Published in 2018 at "Random Operators and Stochastic Equations"
DOI: 10.1515/rose-2018-0019
Abstract: Abstract We present the random version of the classical Banach contraction principle and some of its generalizations to ordered metric spaces or in metric spaces endowed with a graph.
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Keywords:
theorems graph;
random;
random fixed;
deterministic random ... See more keywords