| 109 | sage: H.massey_products(H.3,H.2,H.3,H.2) |
| 110 | |
| 111 | set([c_2_2, a 2-Cochain in H^*(D8; GF(2)), |
| 112 | b_1_1^2+c_2_2, a 2-Cochain in H^*(D8; GF(2)), |
| 113 | b_1_0^2+c_2_2, a 2-Cochain in H^*(D8; GF(2)), |
| 114 | b_1_1^2+b_1_0^2+c_2_2, a 2-Cochain in H^*(D8; GF(2))]) |
| 115 | sage: H.massey_products(H.2,H.3,H.2,H.3) |
| 116 | |
| 117 | set([c_2_2, a 2-Cochain in H^*(D8; GF(2)), |
| 118 | b_1_0^2+c_2_2, a 2-Cochain in H^*(D8; GF(2)), |
| 119 | b_1_1^2+b_1_0^2+c_2_2, a 2-Cochain in H^*(D8; GF(2)), |
| 120 | b_1_1^2+c_2_2, a 2-Cochain in H^*(D8; GF(2))]) |