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Branch of combinatorics with the philosophy that 'total disorder is impossible'. For example, Ramsey's theorem asserts that for each $n$, every sufficiently large graph either contains a clique of size $n$ or a stable set of size $n$.

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Is there a known proof that $R(5,5)\leq 47$ in Ramsey theory?

As an application to a model describing graphs with partial information, I found what might be an (as yet unverified) proof that $R(5,5)\leq 47$. According to the Dynamic Survey of Ramsey Numbers at …
Edwin Karat's user avatar