Function problem by Ciro Santilli 37 Updated 2025-07-16
A problem that has more than two possible yes/no outputs.
It is therefore a generalization of a decision problem.
All non-clade groups are evil. All non-clade terms must be forgotten. Some notable ones:
Jewish Christian by Ciro Santilli 37 Updated 2025-07-16
It is those early splinter groups that make it so clear that religion is fake. We believed in Judaism. Now we believe in Jesus. Oh, but wait, actually Judaism is now semi fake, and we don't live by Jewish law anymore.
Aspen HYSYS by Ciro Santilli 37 Updated 2025-07-16
Video 1.
Aspen Hysys Introduction by Emmanuel Oloyede (2016)
Source. Holy crap, the UI is identical to Microsoft Word with that huge top bar!!!
Change of basis matrix by Ciro Santilli 37 Updated 2025-07-16
The change of basis matrix is the matrix that allows us to express the new basis in an old basis:
Mnemonic is as follows: consider we have an initial basis . Now, we define the new basis in terms of the old basis, e.g.:
which can be written in matrix form as:
and so if we set:
we have:
The usual question then is: given a vector in the new basis, how do we represent it in the old basis?
The answer is that we simply have to calculate the matrix inverse of :
That is the matrix inverse.

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