researcher

J. Martins

34 papers hereh-index 15688 citations53 works total

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

author position

sole author7
first author14
middle author4
last author9

Across the 34 of 34 papers where every author was matched, so the position is known.

fields

math.GT8
math.CT7
math.QA5
hep-th4
math-ph4
gr-qc2

same name

J. Martins — 173 papers
J. Martins — 104 papers, h 12
J. Martins — 96 papers, h 42
J. Martins — 25 papers, h 13
J. Martins — 14 papers, h 15
J. Martins — 7 papers, h 78

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

19982024

most citedHigher lattices, discrete two-dimensional holonomy and topological phases in (3+1) D with higher gauge symmetry

61 citations · 342 across the 32 of their papers we have counts for

collaborators

Showing 2005Show all

2 papers · 1 filter

math.GT2005★ 1 cited

On 2-Dimensional Homotopy Invariants of Complements of Knotted Surfaces

João Faria Martins

We prove that if $M$ is a CW-complex and $*$ is a 0-cell of $M$ , then the crossed module $Π_{2} (M, M^{1}, *)$ does not depend on the cellular decomposition of $M$ up to free products wit…

math.GT2005★ 14 cited

Categorical Groups, Knots and Knotted Surfaces

Joao Faria Martins

We define a knot invariant and a 2-knot invariant from any finite categorical group. We calculate an explicit example for the Spun Trefoil.