Using the theory of L-p-graphons [C. Borgs et al., preprint, arXiv: 1401.2906, 2014; C. Borgs et al., preprint, arXiv: 1408.0744, 2014], we derive and rigorously justify the continuum limit for systems of differential equations on sparse random graphs. Specifically, we show that the solutions of the initial value problems for the discrete models can be approximated by those of an appropriate nonlocal diffusion equation. Our results apply to a range of spatially extended dynamical models of different physical, biological, social, and economic networks. Importantly, our assumptions cover network topologies featured in many important real-world networks. In particular, we derive the continuum limit for coupled dynamical systems on power law graphs. The latter is the main motivation for this work.
THE SEMILINEAR HEAT EQUATION ON SPARES RANDOM GRAPHS
Creators
Dmitry Kaliuzhnyi-Verbovetskyi - Drexel Univ, Dept Math, Philadelphia, PA 19104 USA
Georgi S. Medvedev - Drexel Univ, Dept Math, Philadelphia, PA 19104 USA
Publication Details
SIAM journal on mathematical analysis, v 49(2), pp 1333-1355
Publisher
Siam Publications
Number of pages
23
Grant note
1412066 / Direct For Mathematical & Physical Scien; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS)
DMS 1412066 / NSF; National Science Foundation (NSF)
Resource Type
Journal article
Language
English
Academic Unit
Mathematics
Web of Science ID
WOS:000400748500018
Scopus ID
2-s2.0-85018769736
Other Identifier
991019168371404721
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