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The Cantor Expansion of Real Numbers
The Cantor Expansion of Real Numbers

Modus ponens
Modus ponens

On Exhaustion of Domains - Department of Mathematics, Statistics
On Exhaustion of Domains - Department of Mathematics, Statistics

... imbedding f : D → G such that f (D) ⊃ K. This is equivalent to the following: There exists a sequence fk : D → G of biholomorphic imbeddings such that the sets fk (D) → G as k → ∞, i.e., for any K  G there exists a number N that for k ≥ N , fk (D) ⊃ K. Below we call such a sequence {fk } an exhaust ...
TRUTH DEFINITIONS AND CONSISTENCY PROOFS
TRUTH DEFINITIONS AND CONSISTENCY PROOFS

Jacques Herbrand (1908 - 1931) Principal writings in logic
Jacques Herbrand (1908 - 1931) Principal writings in logic

solutions
solutions

Fibonacci Numbers
Fibonacci Numbers

... as a sum of distinct Fibonacci numbers. We could begin by looking for the largest Fibonacci number that is less than 62, in this case 55, and writing 62 as 55 + 7. Since the difference between 62 and 55 (i.e. 7) must be smaller than 55, then if we know how to decompose it into a sum of distinct Fibo ...
Square Roots - HSU Users Web Pages
Square Roots - HSU Users Web Pages

... “Some real numbers, such as√2 , can't be expressed as a ratio of integers, and are therefore called irrational numbers. … Every [real] number has a decimal representation. ... Real numbers can be represented by points on a line... … Often we identify the point with its coordinate and think of a numb ...
(pdf)
(pdf)

Document
Document

... Write a trace table for the Max algorithm and the input a = {7, 3, 8, 6, 4}, n = 5. Iteration ...
Perfect powers in Catalan and Narayana numbers
Perfect powers in Catalan and Narayana numbers

Linear independence of continued fractions
Linear independence of continued fractions

... where L is a positive real constant which does not depend on n. It follows 1 for every sufficiently large positive integer n. This and (11) that IMnl( 1 for every sufficiently large n, where Mn is an imply that 0 I MnI ...
PROOF OF HAN’S HOOK EXPANSION CONJECTURE
PROOF OF HAN’S HOOK EXPANSION CONJECTURE

Changes of sign of sums of random variables
Changes of sign of sums of random variables

Induction - Mathematical Institute
Induction - Mathematical Institute

Contents 1 The Natural Numbers
Contents 1 The Natural Numbers

... be found in the first two chapters of Stoll’s book. We shall use the result stated by the theorem, however. Theorem 1. Suppose that A is a given set with a fixed element a0 selected in A. Suppose further that we have functions hn : A → A, one for each n ∈ N. Then, there exists a unique function k : ...
Combinatorics of subsets
Combinatorics of subsets

euler and the partial sums of the prime
euler and the partial sums of the prime

CSC236, Summer 2005, Assignment 3 Sample solution Danny Heap
CSC236, Summer 2005, Assignment 3 Sample solution Danny Heap

Worksheet Boolean Algebra
Worksheet Boolean Algebra

The Sum of Two Squares
The Sum of Two Squares

... where ϕ(m) is the Euler totient function, which counts the positive integers less than or equal to m but which are relatively prime to m. How is this related? Let a = 1 and m = 4. This grants that the primes satisfying p ≡ 1 (mod 4) are exactly 1/2 the total primes as ϕ(4) = 2. Also, the primes for ...
Structural Induction - Department of Computer Science
Structural Induction - Department of Computer Science

Document
Document

Full text
Full text

... To obtain a partial generalization of Theorem II of Horadam and the corresponding proposition of 5ubbaRao,we first define {U^} * a fundamental sequence of order r; we illustrate its fundamental nature by showing that any linear recursive sequence of order v can be expressed in terms of {U^}. We defi ...
Math 13 — An Introduction to Abstract Mathematics October 24, 2014
Math 13 — An Introduction to Abstract Mathematics October 24, 2014

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Mathematical proof



In mathematics, a proof is a deductive argument for a mathematical statement. In the argument, other previously established statements, such as theorems, can be used. In principle, a proof can be traced back to self-evident or assumed statements, known as axioms. Proofs are examples of deductive reasoning and are distinguished from inductive or empirical arguments; a proof must demonstrate that a statement is always true (occasionally by listing all possible cases and showing that it holds in each), rather than enumerate many confirmatory cases. An unproved proposition that is believed true is known as a conjecture.Proofs employ logic but usually include some amount of natural language which usually admits some ambiguity. In fact, the vast majority of proofs in written mathematics can be considered as applications of rigorous informal logic. Purely formal proofs, written in symbolic language instead of natural language, are considered in proof theory. The distinction between formal and informal proofs has led to much examination of current and historical mathematical practice, quasi-empiricism in mathematics, and so-called folk mathematics (in both senses of that term). The philosophy of mathematics is concerned with the role of language and logic in proofs, and mathematics as a language.
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