1 citations · 1 across the 2 of their papers we have counts for
4 papers
The Threshold for Ackermannian Ramsey numbers
Menachem Kojman, Eran Omri
For a function , the \emph{-regressive Ramsey number} of is the least so that \[N\stackrel \min \longrightarrow (k)_g\] . This symbol means: for every $c:[N]…
Almost isometric embeddings of metric spaces
Menachem Kojman, Saharon Shelah
We investigate a relations of almost isometric embedding and almost isometry between metric spaces and prove that with respect to these relations: (1) There is a countable universa…
Van der Waerden spaces and Hindman spaces are not the same
Menachem Kojman, Saharon Shelah
A Hausdorff topological space X is van der Waerden if for every sequence (x_n)_n in X there is a converging subsequence (x_n)_{n in A} where subset A of omega contains arithmetic p…
Fallen Cardinals
Menachem Kojman, Saharon Shelah
We prove that for every singular cardinal mu of cofinality omega, the complete Boolean algebra compP_mu(mu) contains as a complete subalgebra an isomorphic copy of the collapse alg…