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:  2025
:   .. : , // . - 2025. - . 114. - .122-137.
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(.):  scientific networks, bibliometric graph, intersection graph, Jaccard coefficient
:   / , . , , . , . : , . , , . , , . 20 . ( ; PageRank SCIENCE INDEX eLibrary), , . .
(.):  Bibliometric networks are defined by the relationships between publications and/or their authors, implemented on the basis of lists of co-authors and bibliographic lists. The mathematical models of such networks, which allow us to explore the communities of scientists and the connections between their works, are the corresponding bibliographic graphs. The paper defines a new type of bibliographic graph, the graph of journal intersections, based on the wellknown binary operation of intersection of sets. The sets here are the sets of authors: the author belongs to the set of authors of the journal, if he has publications in this journal. The vertices of the intersection graph are journals, and connections between them arise if the intersections of the corresponding sets of authors are non-empty. Two modifications of the graph of journal intersections are proposed, taking into account the power of a subset of intersections and the similarity of sets of authors determined using the Jacquard coefficient. Data from 20 leading Russian mathematical journals are used as an example of the construction and study of the journal intersection graph and its modifications. As a result of the analysis, some results were obtained (the "closeness" or "openness" of the communities of authors and journals; a high correlation between the PageRank of graph vertices and the SCIENCE INDEX of journals in eLibrary), allowing a slightly different look at traditional approaches to ranking scientific journals used to assess scientific performance. The directions of further experimental and theoretical research are determined.

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