TY - JOUR AU - Ryan R. Martin AU - Abhishek Methuku AU - Andrew Uzzell AU - Shanise Walker TI - A simple proof for a forbidden subposet problem JO - The electronic journal of combinatorics PY - 2020 VL - 27 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.37236/7680/ DO - 10.37236/7680 ID - 10_37236_7680 ER -