For every number x, x times 0=0, hence dfrac00 can be any number! So dfrac00 "is knows as indeterminate" [1]. But what if we define it to be 0? I already have an answer, but don't know how convincing it is ________. 1= dfrac11= dfrac11+0= dfrac11+ dfrac00= dfrac1 times 01 times 0+ dfrac0 times 10 times 1= dfrac00+ dfrac00=0+0=0, a contradiction. Is there any better explanation why not to define dfrac00 to be 0 (or any other number)? Thanks. [1] #In_algebra