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Opposite of CONCAT()?
01-06-2019, 02:04 PM
Post: #1
Opposite of CONCAT()?
CONCAT(matrix,identity(n)) is used to form an intermediate result. A later operation needs to remove identity(n) from the result:

Example:

a:=[[1,3],[2,7]];
a:=CONCAT(a,identity(2));
a1:=RREF(a); // The concatenation of identity(2), and a^-1

I was hoping for something similar to these ideas, (to remove identity(n) from a concatenation):
// SUPPRESS(a1,identity(2));
// remove(identity(2),a1);
// SUB(a1,a1-identity(2));

Treating identity(n) as an object, fails.
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Messages In This Thread
Opposite of CONCAT()? - DrD - 01-06-2019 02:04 PM
RE: Opposite of CONCAT()? - parisse - 01-06-2019, 02:25 PM
RE: Opposite of CONCAT()? - DrD - 01-06-2019, 04:08 PM
RE: Opposite of CONCAT()? - compsystems - 01-06-2019, 05:25 PM



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