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New posts in natural-numbers
List of powers of Natural Numbers
natural-numbers
How to show that this set is finite?
combinatorics
elementary-set-theory
natural-numbers
Construction of $g:\mathbb{N}\rightarrow\mathbb{N}$ surjective, such that $g^{-1}(n)=\infty,\;\forall n\in\mathbb{N}$
functions
examples-counterexamples
natural-numbers
The history of set-theoretic definitions of $\mathbb N$
reference-request
set-theory
math-history
natural-numbers
Unboundedness of infinite subsets of natural numbers
elementary-set-theory
natural-numbers
Every natural number is covered by consecutive numbers that sum to a prime power.
elementary-number-theory
summation
prime-numbers
integers
natural-numbers
Demonstration that 0 = 1 [duplicate]
complex-analysis
limits
fake-proofs
natural-numbers
paradoxes
How does Peano Postulates construct Natural numbers only?
natural-numbers
peano-axioms
How can I define $\mathbb{N}$ if I postulate existence of a Dedekind-infinite set rather than existence of an inductive set?
set-theory
infinity
axioms
natural-numbers
Are there any two numbers such that multiplying them together is the same as putting their digits next to each other?
natural-numbers
Interesting examples of first-order, one-sorted proper extensions of PA
logic
first-order-logic
axioms
natural-numbers
peano-axioms
The best symbol for non-negative integers?
notation
education
integers
natural-numbers
Finding an infinite union of disjoint infinite sets to add up to natural numbers [duplicate]
solution-verification
prime-numbers
natural-numbers
First order logic: if A sentence is satisfiable then it is satisfiable in the natural number + even function
logic
first-order-logic
model-theory
natural-numbers
satisfiability
Prove 24 divides $u^3-u$ for all odd natural numbers $u$
elementary-number-theory
divisibility
natural-numbers
Bijection $f\colon\mathbb{N}\to\mathbb{N}$ with $f(0)=0$ and $|f(n)-f(n-1)|=n$
sequences-and-series
combinatorics
natural-numbers
Given real numbers: define integers?
definition
natural-numbers
Is there a domain "larger" than (i.e., a supserset of) the complex number domain?
complex-numbers
education
real-numbers
natural-numbers
integers
Why not to extend the set of natural numbers to make it closed under division by zero?
arithmetic
natural-numbers
Is $0$ a natural number?
terminology
natural-numbers
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