Mir vs. Numpy: Reworked!

[Igor Shirkalin]

On Monday, 7 December 2020 at 13:41:17 UTC, Ola Fosheim Grostad 
wrote:
> On Monday, 7 December 2020 at 13:17:47 UTC, jmh530 wrote:
>> On Monday, 7 December 2020 at 11:21:16 UTC, Igor Shirkalin 
>> wrote:
>>> [snip]
>>>
>>> Agreed. As a matter of fact the simplest convolutions of 
>>> tensors are out of date. It is like there's no need to 
>>> calculate inverse matrix. Mir is the usefull work for author, 
>>> of course, and practically almost not used. Every one who 
>>> needs something fast in his own tasks should make same things 
>>> again in D.
>>
>> "no need to calculate inverse matrix" What? Since when?
>
> I dont know what he meant in this context, but a common 
> technique in computer graphics is to build the inverse as as 
> you apply computations.

It makes sense for simplest cases if matrices are small (2x2, 3x3 
or even 4x4) and you have to multiply them at least thousands of 
times.