Matematické Fórum

Ahoj ↑ Andrejka3:,

Neber to na seba....mne tu meter nasnezilo tak pisem akokokeby z mojho IGLU

No staci prechadzka na google

no mozes si precitat aj Bourbaki

napr. ten hypertext co som dal vysie ti vychrli toto

Four binary operations.

    Algebra over a field: An algebra over a ring except that R is a field instead of a commutative ring.
        Jordan algebra: a Jordan ring except that R is a field.
        Lie algebra: an algebra over a field respecting the Jacobi identity, whose vector multiplication, the Lie bracket denoted [u,v], anticommutes, does not associate, and is nilpotent.
        Associative algebra: an algebra over a field, or a module, whose vector multiplication associates.
            Linear algebra: an associative unital algebra with the members of M being matrices. Every matrix has a dimension nxm, n and m positive integers. If one of n or m is 1, the matrix is a vector; if both are 1, it is a scalar. Addition of matrices is defined only if they have the same dimensions. Matrix multiplication, denoted by concatenation, is the vector multiplication. Let matrix A be nxm and matrix B be ixj. Then AB is defined if and only if m=i; BA, if and only if j=n. There also exists an mxm matrix I and an nxn matrix J such that AI=JA=A. If u and v are vectors having the same dimensions, they have an inner product, denoted 〈u,v〉. Hence there is an orthonormal basis; see inner product space above. There is a unary function, the determinant, from square (nxn for any n) matrices to R.
            Commutative algebra: an associative algebra whose vector multiplication commutes.
                Symmetric algebra: a commutative algebra with unital vector multiplication.
 
atd atd

↑ Andrejka3:,
Slovo je podla mna nestandarne, definicia  to je presne ALGEBRAICKA STRUKTURA

Aj na  cz wikipedii najdes slovo algebra v tomto suvise

http://cs.wikipedia.org/wiki/Algebra_%28struktura%29


Mozno to pouziva lokalne len niekto v tom zmysle ako pises ty... alebo je to vseobecne v Cz a Sk? Prave to neviem.

Ale naco potom davat nove meno ked je uz  ine...

↑ Andrejka3:,
To ma netrapis, len treba vzdy povedat svoj nazor.
Otazky nie su blbe ale odpovede mozu byt...
Zda sa mi ze je dolezite si vysvetlit vsetki "slova", vsak  ako inac sa rozumliet?
A potom je iste dobre vediet vsetki hononyma kazdeho slova.

Mozno to slovo " ALGEBRA" sa bezne pouziva  v Cz a Sk ale to neviem   .... a vtedy treba sa potom prisposobit.

Ahoj ↑ OiBobik:,
dobra poznamka... ideme po tom istom chodniku.