$R(K_6-e, K_4) = 30$

We settle the Ramsey problem $R (K_{6} - e, K_{4})$ , also known as $R (J_{6}, K_{4})$ and $R (K_{6}^{-}, K_{4})$ . Previously, the best bounds were $30 \leq R (K_{6} - e, K 4) \leq 32$ . We prove that $R (K_{6} - e, K_{4}) = 30$ . Our technique is based on the recent approach of Angeltveit and McKay and on older algorithms of McKay and Radziszowski.

$R (K_{6} - e, K_{4}) = 30$

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$R (K_{6} - e, K_{4}) = 30$

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R(K6−e,K4)=30R(K6​−e,K4​)=30

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R(K6−e,K4)=30R(K6​−e,K4​)=30

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$R (K_{6} - e, K_{4}) = 30$

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AI智能校验

$R (K_{6} - e, K_{4}) = 30$

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AI智能校验