Archives
Keywords
Aronszajn tree Ineffable cardinal Whitehead Problem PFA perfectly normal Reflecting stationary set diamond star indecomposable filter Cohen real Hedetniemi's conjecture Almost Souslin SNR Sigma-Prikry super-Souslin tree Chromatic number L-space Parameterized proxy principle Cardinal function Constructible Universe Large Cardinals middle diamond incompactness Commutative cancellative semigroups Ostaszewski square Monotonically far approachability ideal reflection principles Forcing with side conditions Successor of Singular Cardinal Nonspecial tree Dushnik-Miller P-Ideal Dichotomy Square-Brackets Partition Relations Partition Relations Interval topology on trees Ramsey theory over partitions Diamond-sharp Fast club C-sequence Entangled linear order Souslin Tree transformations Commutative projection system Dowker space Subtle cardinal weak square Ascending path Rainbow sets Cardinal Invariants ZFC construction Sierpinski's onto mapping principle Subadditive Almost-disjoint family Greatly Mahlo specializable Souslin tree Strongly compact cardinal Strongly Luzin set Subnormal ideal stick Antichain Axiom R Countryman line Forcing GMA countably metacompact Microscopic Approach Mandelbrot set Uniformly homogeneous Foundations Prikry-type forcing Local Club Condensation. S-Space xbox Erdos-Hajnal graphs Amenable C-sequence sap Forcing Axioms Minimal Walks Diamond for trees Filter reflection Shelah's Strong Hypothesis Diamond Knaster Kurepa Hypothesis nonmeager set unbounded function Open Access Hindman's Theorem Distributive tree Precaliber Uniformly coherent Knaster and friends regressive Souslin tree Fat stationary set Postprocessing function Poset Rado's conjecture Luzin set Uniformization polarized partition relation Successor of Regular Cardinal Ascent Path coloring number very good scale free Boolean algebra full tree Subtle tree property Almost countably chromatic Vanishing levels ccc square AIM forcing Lipschitz reduction Weakly compact cardinal Universal Sequences Analytic sets Partition relations for trees Prevalent singular cardinals Strong coloring Coherent tree strongly bounded groups Martin's Axiom projective Boolean algebra Respecting tree Generalized Clubs Absoluteness higher Baire space Slim tree Hereditarily Lindelöf space O-space Fodor-type reflection HOD weak Kurepa tree b-scale Jonsson cardinal Erdos Cardinal positive partition relation Well-behaved magma Sakurai's Bell inequality Was Ulam right? Small forcing OCA club_AD Iterated forcing Rock n' Roll Selective Ultrafilter Intersection model Club Guessing Singular Density PFA(S)[S] 54G20 Singular cofinality square principles Singular cardinals combinatorics Ulam matrix Closed coloring tensor product graph Reduced Power Chang's conjecture stationary reflection Non-saturation weak diamond free Souslin tree Generalized descriptive set theory stationary hitting
Category Archives: Notes
Shelah’s solution to Whitehead’s problem
Whitehead problem notes in hebrew : Table of contents Chapter 0 Chapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6 Chapter 7 Chapter 8 Chapter 9 Chapter 10 Chapter 11 Chapter 12 References
Infinite Combinatorial Topology
Back in 2005, as a master student, I attended a course by Boaz Tsaban, entitled “Infinite Combinatorial Topology”. A friend and I decided to produce lecture notes, but in a somewhat loose sense, that is: we sometimes omit material given … Continue reading
Posted in Notes
Tagged b-scale, Cardinal function, Cardinal Invariants, Hereditarily Lindelöf space
8 Comments
