• Thumbnail for Proof that e is irrational
    proved that e is irrational; that is, that it cannot be expressed as the quotient of two integers. Euler wrote the first proof of the fact that e is irrational...
    11 KB (1,583 words) - 15:33, 28 May 2025
  • the 1760s, Johann Heinrich Lambert was the first to prove that the number π is irrational, meaning it cannot be expressed as a fraction a / b {\displaystyle...
    25 KB (5,785 words) - 15:35, 28 May 2025
  • Thumbnail for Irrational number
    In mathematics, the irrational numbers are all the real numbers that are not rational numbers. That is, irrational numbers cannot be expressed as the ratio...
    40 KB (5,309 words) - 10:49, 5 May 2025
  • Thumbnail for Lindemann–Weierstrass theorem
    contradiction which completes the proof. ∎ Note that Lemma A is sufficient to prove that e is irrational, since otherwise we may write e = p / q, where both p and...
    28 KB (4,778 words) - 00:16, 18 April 2025
  • Thumbnail for E (mathematical constant)
    {\displaystyle e^{i\pi }+1=0} and play important and recurring roles across mathematics. Like the constant π, e is irrational, meaning that it cannot be...
    54 KB (6,480 words) - 15:37, 31 May 2025
  • Thumbnail for List of representations of e
    mathematical constant e can be represented in a variety of ways as a real number. Since e is an irrational number (see proof that e is irrational), it cannot be...
    13 KB (2,425 words) - 01:40, 25 May 2025
  • proof Mathematical induction and a proof Proof that 0.999... equals 1 Proof that 22/7 exceeds π Proof that e is irrational Proof that π is irrational...
    6 KB (593 words) - 20:11, 5 June 2023
  • Thumbnail for Mathematical proof
    Elements also covers number theory, including a proof that the square root of two is irrational and a proof that there are infinitely many prime numbers. Further...
    34 KB (4,229 words) - 11:05, 26 May 2025
  • and Hadamard's inequality Four proofs of the Basel problem Proof that e is irrational (also showing the irrationality of certain related numbers) Hilbert's...
    5 KB (465 words) - 20:59, 14 May 2025
  • In mathematics, a constructive proof is a method of proof that demonstrates the existence of a mathematical object by creating or providing a method for...
    14 KB (2,074 words) - 15:24, 5 March 2025
  • Thumbnail for Euler's formula
    Euler's formula (redirect from E^ix)
    means. Various proofs of the formula are possible. This proof shows that the quotient of the trigonometric and exponential expressions is the constant function...
    27 KB (3,950 words) - 08:13, 13 June 2025
  • Thumbnail for Square root of 2
    natural number that is not a perfect square is irrational. For other proofs that the square root of any non-square natural number is irrational, see Quadratic...
    42 KB (6,131 words) - 09:39, 9 June 2025
  • Thumbnail for Half-life
    Half-life (category Pages that use a deprecated format of the chem tags)
    {1}{t_{2}}}+{\frac {1}{t_{3}}}+\cdots } For a proof of these formulas, see Exponential decay § Decay by two or more processes. There is a half-life describing any exponential-decay...
    17 KB (2,175 words) - 05:07, 18 April 2025
  • Thumbnail for Natural logarithm
    The natural logarithm of a number is its logarithm to the base of the mathematical constant e, which is an irrational and transcendental number approximately...
    34 KB (5,882 words) - 15:46, 17 June 2025
  • factorial of n. One proof that e is irrational uses a special case of this formula.) Inverse of logarithm integral. Define e x {\displaystyle e^{x}} to be the...
    20 KB (4,251 words) - 03:04, 17 March 2025
  • List of exponential topics (category Short description is different from Wikidata)
    key frequencies p-adic exponential function Power law Proof that e is irrational Proof that e is transcendental Q-exponential Radioactive decay Rule of...
    6 KB (281 words) - 08:56, 22 January 2024
  • what later became a very extensive theory. The proof that the square root of 2 (√2) is irrational (i.e. cannot be expressed as a fraction of two whole...
    15 KB (2,223 words) - 10:12, 24 December 2024
  • Thumbnail for Compound interest
    Compound interest (category Pages that use a deprecated format of the math tags)
    interest is interest accumulated from a principal sum and previously accumulated interest. It is the result of reinvesting or retaining interest that would...
    21 KB (2,890 words) - 12:24, 5 June 2025
  • Thumbnail for Leonhard Euler
    Leonhard Euler (category Short description is different from Wikidata)
    informed that a learned mathematician had produced a proof of the existence of God: he agreed to view the proof as it was presented in court. Euler appeared,...
    107 KB (10,831 words) - 22:10, 16 June 2025
  • Thumbnail for Euler's identity
    Euler's identity (redirect from E^πi)
    addition, it is directly used in a proof that π is transcendental, which implies the impossibility of squaring the circle. Euler's identity is often cited...
    15 KB (1,947 words) - 12:43, 13 June 2025
  • mathematics, a quadratic irrational number (also known as a quadratic irrational or quadratic surd) is an irrational number that is the solution to some quadratic...
    12 KB (1,691 words) - 02:50, 6 January 2025
  • List of number theory topics (category Short description is different from Wikidata)
    Transcendental number e (mathematical constant) pi, list of topics related to pi Squaring the circle Proof that e is irrational Lindemann–Weierstrass...
    10 KB (938 words) - 19:59, 21 December 2024
  • Thumbnail for Schanuel's conjecture
    Schanuel's conjecture (category Short description is different from Wikidata)
    imply that for any irrational number t {\displaystyle t} , at least one of the numbers 2 t {\displaystyle 2^{t}} and 3 t {\displaystyle 3^{t}} is transcendental...
    16 KB (1,935 words) - 22:39, 20 April 2025
  • Thumbnail for Proof that 22/7 exceeds π
    Proofs of the mathematical result that the rational number ⁠22/7⁠ is greater than π (pi) date back to antiquity. One of these proofs, more recently developed...
    14 KB (2,814 words) - 09:36, 14 June 2025
  • propositions in logic. The irrationality of the square root of 2 is one of the oldest proofs of impossibility. It shows that it is impossible to express the...
    29 KB (3,915 words) - 08:17, 2 August 2024
  • In logic, proof by contradiction is a form of proof that establishes the truth or the validity of a proposition by showing that assuming the proposition...
    20 KB (2,603 words) - 01:43, 16 June 2025
  • Liouville number (category Irrational numbers)
    Proof of assertion: As a consequence of this lemma, let x be a Liouville number; as noted in the article text, x is then irrational. If x is algebraic...
    20 KB (4,187 words) - 13:26, 8 June 2025
  • Transcendental number (category Articles containing proofs)
    that e and π were both transcendental numbers in his 1768 paper proving the number π is irrational, and proposed a tentative sketch proof that π is transcendental...
    52 KB (6,816 words) - 18:16, 15 June 2025
  • Predictably Irrational: The Hidden Forces That Shape Our Decisions is a 2008 book by Dan Ariely, in which he challenges readers' assumptions about making...
    19 KB (2,709 words) - 17:41, 26 May 2025
  • Thumbnail for Ferdinand von Lindemann
    base of natural logarithms, is transcendental. Before the publication of Lindemann's proof, it was known that π was irrational, as Johann Heinrich Lambert...
    5 KB (304 words) - 11:36, 10 June 2025