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THEN
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Thm* a,b:T List. ||a|| = ||b||  ( i: . i<||a||  a[i] = b[i])  a = b
THEN
Try (RWO Thm* f:(A B), as:A List, n: ||as||. map(f;as)[n] = f(as[n]) 0)
THEN
Try (RWO Thm* L:T List, i,j,x: ||L||. swap(L;i;j)[x] = L[((i, j)(x))] 0)
THEN
Try (RWO Thm* f:(A B), as:A List, n: ||as||. map(f;as)[n] = f(as[n]) 0)
THEN
All (RWO Thm* f:(A B), as:A List. ||map(f;as)|| = ||as|| )
THEN
Try (RWO Thm* f:(A B), as:A List. ||map(f;as)|| = ||as|| 0)
THEN
All (RWO Thm* L:T List, i,j: ||L||. ||swap(L;i;j)|| = ||L|| )
THEN
Try (RWO Thm* f:(A B), as:A List. ||map(f;as)|| = ||as|| 0) |