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### Recent blog posts

- A strong form of König’s lemma October 21, 2017
- Prikry forcing may add a Souslin tree June 12, 2016
- The reflection principle $R_2$ May 20, 2016
- Prolific Souslin trees March 17, 2016
- Generalizations of Martin’s Axiom and the well-met condition January 11, 2015
- Many diamonds from just one January 6, 2015
- Happy new jewish year! September 24, 2014
- Square principles April 19, 2014

### Keywords

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

# Tag Archives: Foundations

## Review: Is classical set theory compatible with quantum experiments?

Yesterday, I attended a talk at the Quantum Foundations seminar at the beautiful Perimeter Institute for Theoretical Physics (Waterloo, Ontario). The (somewhat provocative) title of the talk was “Is Classical Set Theory Compatible with Quantum Experiments?”, and the speaker was Radu … Continue reading