| abs-nodes(buf0, m, x0, lax0, false) ⊦ abs-nodes(buf0 + buf1, m, x0 + x1, lax0 + lax1, weak) ↔ abs-nodes(buf1, m + # buf0, x1, lax1, weak) |
abs-nodes(buf0, m, x0, lax0, false) ⊦ abs-nodes(buf0 + buf1, m, x0 + x1, lax0 + lax1, weak) ↔ abs-nodes(buf1, m + # buf0, x1, lax1, weak)