Joseph Helfer

1. Counting cycles in labeled graphs: The nonpositive immersion property\n for one-relator groups
   2014/10/09 by Joseph Helfer, Helfer, Joseph, Daniel T. Wise +1 · 2 citations
   Computer Science · Mathematics · #Advanced Topology and Set Theory #Computability, Logic, AI Algorithms #FOS: Mathematics #Geometric and Algebraic Topology #Group Theory (math.GR) #Topological and Geometric Data Analysis
2. Set-theoretic universes and paradoxes in 2-topoi
   2026/07/30 by Joseph Helfer
   Mathematics · #math.CT #math.LO #msc:03C62 #msc:03E99 #msc:03G30 #msc:18B25 #msc:18N10 #msc:18N25