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- Prikry forcing may add a Souslin tree June 12, 2016
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- Prolific Souslin trees March 17, 2016
- Generalizations of Martin’s Axiom and the well-met condition January 11, 2015
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middle diamond Successor of Singular Cardinal projective Boolean algebra sap tensor product graph Foundations Prevalent singular cardinals Dushnik-Miller Erdos-Hajnal graphs Parameterized proxy principle b-scale Reduced Power Chromatic number Hereditarily Lindelöf space Prikry-type forcing Fodor-type reflection Knaster Absoluteness Axiom R Slim tree Shelah's Strong Hypothesis Erdos Cardinal PFA(S)[S] L-space OCA Nonspecial tree stationary reflection Large Cardinals S-Space 20M14 Distributive tree Singular coﬁnality Successor of Regular Cardinal Stevo Todorcevic Coherent tree Jonsson cardinal Almost-disjoint famiy super-Souslin tree Poset Generalized Clubs Kurepa Hypothesis Uniformly coherent Sakurai's Bell inequality Ostaszewski square Souslin Tree stationary hitting PFA Chang's conjecture Square-Brackets Partition Relations Aronszajn tree Selective Ultrafilter weak diamond Fat stationary set Rock n' Roll Diamond polarized partition relation Rainbow sets Hindman's Theorem Constructible Universe Singular cardinals combinatorics free Boolean algebra ccc Cohen real Mandelbrot set Postprocessing function 05A17 xbox Almost countably chromatic Forcing Whitehead Problem Commutative cancellative semigroups Rado's conjecture Hedetniemi's conjecture very good scale Forcing Axioms Singular Density reflection principles P-Ideal Dichotomy Antichain Luzin set Microscopic Approach Non-saturation Martin's Axiom Almost Souslin weak square Uniformization Weakly compact cardinal square principles Cardinal Invariants Minimal Walks Ascent Path Universal Sequences Partition Relations Fast club 11P99 HOD Small forcing coloring number Club Guessing Cardinal function diamond star approachability ideal square incompactness

# Tag Archives: tensor product graph

## Hedetniemi’s conjecture for uncountable graphs

Abstract. It is proved that in Godel’s constructible universe, for every successor cardinal $\kappa$, there exist graphs $\mathcal G$ and $\mathcal H$ of size and chromatic number $\kappa$, for which the tensor product graph $\mathcal G\times\mathcal H$ is countably chromatic. … Continue reading