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researcher

Kei Matsushima

5 papers hereh-index 460 citations13 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • first author2
  • middle author3

Across the 5 of 5 papers where every author was matched, so the position is known.

fields
  • physics.class-ph2
  • math.GM1
  • math-ph1
  • physics.app-ph1
same name
  • Kei Matsushima — 2 papers, h 1
  • Kei Matsushima — 2 papers, h 1

Either other researchers who publish under this name, or the same person where the external sources have not merged their records.

identity via Semantic Scholar / OpenAlex

activity
20242026
most citedNon-Bloch band theory for time-modulated discrete mechanical systems

6 citations · 7 across the 3 of their papers we have counts for

collaborators
Showing math.GMShow all

1 paper · 1 filter

math.GM2026

Generalized Pellet's theorem for analytic matrix-valued functions

Hiromochi Itoh, Kei Matsushima, Takayuki Yamada

Generalized Pellet's theorem is extended to analytic matrix-valued functions using Descartes' rule of signs for infinite series. Cauchy's estimate is incorporated to allow numerica…

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Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.