researcher

J. Christensen

51 papers hereh-index 14730 citations48 works total

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

author position

sole author7
first author28
middle author8
last author6

Across the 49 of 51 papers where every author was matched, so the position is known.

fields

math.AT12
math.OA12
gr-qc8
math.DG6
math.RT6
hep-lat2

same name

J. Christensen — 14 papers, h 34
J. Christensen — 13 papers, h 9
J. Christensen — 10 papers, h 11
J. Christensen — 9 papers, h 5
J. Christensen — 4 papers, h 3
J. Christensen — 2 papers, h 13

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

19982023

most citedQuillen model structures for relative homological algebra

93 citations · 748 across the 47 of their papers we have counts for

collaborators

Showing 2001Show all

2 papers · 1 filter

gr-qc2001★ 29 cited

An efficient algorithm for the Riemannian 10j symbols

J. Daniel Christensen, Greg Egan

The 10j symbol is a spin network that appears in the partition function for the Barrett-Crane model of Riemannian quantum gravity. Elementary methods of calculating the 10j symbol…

gr-qc2001★ 29 cited

Positivity of Spin Foam Amplitudes

John C. Baez, J. Daniel Christensen

The amplitude for a spin foam in the Barrett-Crane model of Riemannian quantum gravity is given as a product over its vertices, edges and faces, with one factor of the Riemannian 1…