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