So an identity matrix is a matrix.

Let's just do some matrix matrix products.

A 2 by 3 matrix, a 2 by 3 times 3 by 2 matrix, I got a 2 by 2 matrix.

The identity matrix times any other matrix is just that matrix.

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Good neighbourliness

I've been snooping around.

Around.

So in general, the nullity of any matrix of any matrix

So it's a 2 by 3 matrix.

Anything times that identity matrix is going to be equal to itself.

It's actually going to be a 3 by 3 matrix, a much bigger matrix.

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quot Adjacent quot would include trans ocean adjacency, e.g. Brazil and Nigeria.

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Finally, neighborood.

You ' II be seeing me around. Oh?

See you around.

In mathematics, an integer matrix is a matrix whose entries are all integers.

This is equal to some new matrix I'll make it pretty big right here times our vector x .

Or, we would call this matrix, just by convention, you would call this a two by three matrix.

We have a 3 by 2, times a 2 by 3 matrix, so it's going to result in a 3 by 3 matrix.

I get the k by k identity matrix. I get the identity matrix of k, because it's going to be k by n, times n by k.

So that's my original A right there.

OK, so the matrix of cofactors is essentially applying this pattern to the matrix of minors.

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I will create an augmented matrix.

It's a diagonal matrix.

Matrix of minors.

Adjacency would include strategic adjacency across a body of water, no matter how large.

I am familiar with this neighborhood.

There are dogs around.

You live around here?

You live around here?

You're not from around here.

There are no ceps around

Oh, things get around.

I'm around, all right.

I stick around, Mike.

Wait for me there.

I might be in the neighborhood.

There's plenty of others like him around.

To figure out its transformation matrix, so if we say that T of x is equal to, I don't know, let's call it some matrix S times x.

If we have a 2x2 matrix, the identity matrix is 1, 0, 0, 1.