Euclidean Ramsey Theory
(La,Lb;n) means for all 2-col of R^n exists red unit-a-AP or blue unit-b-AP
(La,Xb;n) means for all 2-col of R^n exists red unit-a-AP or blue X-config, and X size b
Chrom Number of n-dim Euclidean space
[https:www.cs.bme.hu gezachromatic.pdf Note on the chi(En) by Radocic-Toth