All triangles are Ramsey

Peter Frankl, Vojtěch Rödl
1986 Transactions of the American Mathematical Society  
Given a triangle ABC and an integer r, r > 2, it is shown that for n sufficiently large and an arbitrary r-coloring of Rn one can find a monochromatic copy of ABC.
doi:10.1090/s0002-9947-1986-0854099-6 fatcat:fgc3ldn7uzfobadk2xz4ssoie4