Originally Posted by

**logic**
Math is just an** arbitrary**, symbolic, axiomatic system of *equivalences and tautologies*. You can prove whatever you want, if you choose the axioms....

Originally Posted by

**Markus Hanke**
theoretical issues, which I understood to relate to mathematics, **not** epistemology.

Originally Posted by

**Markus Hanke**
why don't you show me a**real number **the square of which is -1.....

If you are interested, start a separate thread and we can discuss all you want, Markus, but you ought to be prepared to discuss the logical foundations of your [

*arbitrary**] system. If

** it is flawed**, you get yourself into a

*cul-de-sac. *

You should at least be prepared to question all your basic definitions of number, zero, rational, real etc. and abandon poetic licenses and figments (such as : 0 is a number,.. x^0 = 1...). If you start with false or flawed axioms you get in deep, irreversible trouble.

At

* physicsforums *they prove that 0.9999999...... = 1 , is that an idiocy of theirs or is it an acknolwedged conclusion

*(mathematical fact,* as you put it)? if that is official math and you agree, I hope you realize that, by that, you are implying that 2=1=836= ... that is sheer chaos!

I hope I made myself clear, this time.

**(for example) you surely know that current set theory (the logical foundations of math) accepts the "axiom of choice" which produces the Banach-Tarsky paradox that proves that 2=1*