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start improving the stability of smt in DynMatrix #830

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6 changes: 4 additions & 2 deletions theories/algebra/DynMatrix.eca
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Original file line number Diff line number Diff line change
Expand Up @@ -1664,10 +1664,12 @@ lemma catmr_subm m n: 0 <= n < cols m =>
proof.
move => n_bound; rewrite eq_matrixP /=.
split => [| i j bound].
- smt(rows_catmr cols_catmr size_subm).
- split;2:smt(cols_catmr size_subm).
by have /# := rows_catmr (subm m 0 (rows m) 0 n) (subm m 0 (rows m) n (cols m)).
rewrite get_catmr // cols_subm /=.
case (j < n) => j_bound.
- rewrite get_subm /=; first 2 smt(size_catmr size_subm).
- rewrite get_subm /=; 2: smt(size_catmr size_subm).
+ by have /# := size_catmr (subm m 0 (rows m) 0 n) (subm m 0 (rows m) n (cols m)).
rewrite (getm0E (subm _ _ _ _ _)).
+ smt(size_catmr size_subm).
by rewrite addr0.
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