Exetaseis :S :S :S

[Thelasthero]

i grammatiki einai to provlima ta alla einai eukola lol..

[diablery]

To xeirotero ma8ima einai Algevrikes Domes!  >:( >:(

CHeck ! :

 

    *  ∀x∈R x⋅0 = 0 = 0⋅x
    * ∀x,y∈R x⋅(-y) = -(x⋅y) = (-x)⋅y
    * ∀x,y∈R (-x)⋅(-y) = x⋅y
    * R≠{0} ⇔ 1≠0


(l2)=(d)
(x+y)⋅z = (x⋅z) + (y⋅z)
x⋅(y+z) = (x⋅y) + (x⋅z)


("m2")
(α�.x)⋅y = α�.(x⋅y)
x⋅(α�.y) = α�.(x⋅y)