Newbetuts

Why does the definition of an open subscheme / open immersion of schemes allow for an "extra" isomorphism?

Is some thing wrong with the epsilon-delta definition of limit??

Why do we think of a vector as being the same as a differential operator?

Why is the empty set considered an interval?

Positive and negative complex numbers?

Do we have to prove how parentheses work in the Peano axioms?

What does threadsafe mean?

Is $1234567891011121314151617181920212223......$ an integer?

Is the empty graph connected?

We can define the derivative of a function whose domain is a subset of rational numbers?

$\epsilon, \delta$...So what?

Rigorous definition of "differential"

Clarifying the homomorphism's definition?

Proof that the empty set is a relation

What is a number?

Kronecker product and outer product confusion

How do you define the "boundary" of a topological space?

New posts in definition

Is there other function $f$ such that $f(x, y) + f(y, z) \geq 2f(x,z)$? What is it name?

What is AJAX, really?

How to define $x^a$ for arbitrary real numbers $x$ and $a$

Why does the definition of an open subscheme / open immersion of schemes allow for an "extra" isomorphism?

Is some thing wrong with the epsilon-delta definition of limit??

Why do we think of a vector as being the same as a differential operator?

Why is the empty set considered an interval?

Positive and negative complex numbers?

Do we have to prove how parentheses work in the Peano axioms?

What does threadsafe mean?

Is $1234567891011121314151617181920212223......$ an integer?

Is the empty graph connected?

We can define the derivative of a function whose domain is a subset of rational numbers?

$\epsilon, \delta$...So what?

Rigorous definition of "differential"

Clarifying the homomorphism's definition?

Proof that the empty set is a relation

What is a number?

Kronecker product and outer product confusion

How do you define the "boundary" of a topological space?