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stationary reflection Minimal Walks 54G20 Knaster positive partition relation Strong coloring higher Baire space Analytic sets Filter reflection Diamond for trees GMA regressive Souslin tree Microscopic Approach Axiom R Countryman line Diamond Successor of Singular Cardinal Vanishing levels Strongly compact cardinal very good scale Ramsey theory over partitions Shelah's Strong Hypothesis Singular cardinals combinatorics Cardinal Invariants Luzin set Knaster and friends Almost countably chromatic Commutative projection system super-Souslin tree Prikry-type forcing b-scale Fodor-type reflection Sakurai's Bell inequality HOD Large Cardinals Partition Relations Uniformly homogeneous Generalized descriptive set theory Nonspecial tree Sierpinski's onto mapping principle Postprocessing function free Boolean algebra Forcing Axioms Aronszajn tree Successor of Regular Cardinal Amenable C-sequence weak diamond Partition relations for trees Whitehead Problem weak Kurepa tree tensor product graph Distributive tree Erdos-Hajnal graphs Intersection model Sigma-Prikry Ascending path SNR incompactness Singular Density reflection principles free Souslin tree Local Club Condensation. Almost-disjoint family Uniformization specializable Souslin tree Foundations club_AD nonmeager set Hereditarily Lindelöf space Forcing with side conditions indecomposable filter Absoluteness ccc Entangled linear order Subadditive weak square Cohen real P-Ideal Dichotomy strongly bounded groups sap Greatly Mahlo coloring number Weakly compact cardinal Small forcing Ostaszewski square Rock n' Roll Strongly Luzin set Subtle cardinal Hedetniemi's conjecture Precaliber Selective Ultrafilter Interval topology on trees Cardinal function Almost Souslin Monotonically far approachability ideal Fat stationary set Square-Brackets Partition Relations Martin's Axiom xbox Poset Souslin Tree unbounded function polarized partition relation stationary hitting Ulam matrix Mandelbrot set Coherent tree Chang's conjecture Antichain Was Ulam right? Slim tree Lipschitz reduction Subnormal ideal Non-saturation Dushnik-Miller C-sequence Iterated forcing ZFC construction Commutative cancellative semigroups diamond star Reduced Power Closed coloring middle diamond OCA perfectly normal Open Access square Generalized Clubs Club Guessing Rado's conjecture Rainbow sets transformations Uniformly coherent Constructible Universe L-space countably metacompact Reflecting stationary set PFA Hindman's Theorem Chromatic number O-space PFA(S)[S] Well-behaved magma projective Boolean algebra Ascent Path S-Space Universal Sequences Respecting tree Diamond-sharp Forcing Jonsson cardinal Kurepa Hypothesis Singular cofinality square principles Ineffable cardinal Fast club Prevalent singular cardinals AIM forcing Subtle tree property Parameterized proxy principle Erdos Cardinal stick full tree Dowker space
Tag Archives: Mandelbrot set
A natural Mandelbrot set
Chris Hadfield is a Canadian astronaut, with a very high-profile twitter account. He posts there beautiful photos everyday, and I (plus half a million followers) enjoy it very much. Today, Chris posted the following picture: and I find it quite … Continue reading
