Excellent in its simplicity and clarity. This was precisely the explanation I needed.

thanks bro ! doing good job over there keep on going

Thank you!

carajo no hay videos en español sobre el tema?

Its really is essential for the levi-cevita symbols and einsteins notation.

keep on going it becomes better in time.

Please use a more visible color next time!

Very helpful. You rock buddy.

So, is this "delta" used to 'scrap' any multiplications that give 'no value', with the intention to make it easier to calculate?

first! (*Troll)

awfull thing ı dont understand anything ...