Weird proof

[odd hill]

Can someone explain why this proof is false… Logic seems right but I am finding it hard to believe this.

[lunar pollen]

5 = 4
0 • 5 = 0 • 4
0 = 0
5 = 4 is thus true

you cannot simply multiply by 0

[tardy perch]

Bro is using calculas and multiplying by 0

[odd hill]

I see

[inland spire]

your proof isn't false?

you cant multiply by zero on both sides in arithmetic operations because 0 * <> has no inverse in the set of real numbers

in real number algebraic proofs, zero does not preserve the structure of an equation in the same way other numbers do cuz its not an injective op

but if ur multiplying an operator by 0 that is different.

$0 \cdot \int$ is not formally defined, so you can define it yourself

[tardy dock]

MARETU

[modern ivy]

it's lowkey the same thing as this

[lunar pollen]

I’m keeping that thanks

[lunar pollen]

The only part that is false is the last line, where it says because the result is 0=0 which is true, that implies that those two are equal. It doesn’t imply that which makes the proof incorrect.

[inland spire]

the only reason itd be incorrect is if multiplying by 0 were not an injective operation

multiplying 0 by an integral symbol is not standard

so aspect can define it however they want

[lunar pollen]

uh yeah that too!

[proud oracle]

I scrolled too far

wtf does this even MEAN bro