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1 June 2024
- diffhist Foundations of mathematics 10:43 −841 D.Lazard talk contribs (→top: rm paragraphs consisting of opinions and analysis that do not belong here, and rewriting the remainder of the lead)
- diffhist Tautology (logic) 09:13 −242 Oneequalsequalsone talk contribs (rm reference to self) Tag: Visual edit
- diffhist Singleton (mathematics) 05:27 −191 Roffaduft talk contribs (Undid revision 1225959537 by Georgydunaev (talk) See Talk section) Tag: Undo
- diffhist Class (set theory) 05:06 +552 C7XWiki talk contribs (→Classes in formal set theories)
- diffhist m Non-Euclidean geometry 04:37 −28 WinstonWolfie talk contribs (→Background: Wikify)
- diffhist m Construction of the real numbers 04:27 −24 Joyous! talk contribs (Reverted 1 edit by Meirahana (talk) to last revision by AnomieBOT) Tags: Twinkle Undo
- diffhist m Construction of the real numbers 04:04 +24 Meirahana talk contribs (→Construction using hyperreal numbers) Tag: Reverted
- diffhist René Descartes 02:03 −10 Queenofconfusion talk contribs (rv/v - Undid revision 1226657547 by 97.113.11.42 (talk)) Tag: Undo
- diffhist René Descartes 02:01 +10 97.113.11.42 talk Tag: Reverted
- diffhist Continuum hypothesis 01:12 +2 Turkeyphant talk contribs (→Generalized continuum hypothesis: Fix error) Tags: Mobile edit Mobile web edit
31 May 2024
- diffhist m Brahmagupta 22:26 −116 Yue talk contribs (Reverted edit by 63.153.141.228 (talk) to last version by RegentsPark) Tag: Rollback
- diffhist Halting problem 22:25 +453 Mathnerd314159 talk contribs (→Approximations: add plain English explanations)
- diffhist Halting problem 21:57 +192 Mathnerd314159 talk contribs (revise again - it is really the problem that is significant, the proof is incidental. and the proof was unclear)
- diffhist Brahmagupta 21:49 +116 63.153.141.228 talk (→Early concept of gravity (a laughable presentism shoehorning "gravity" into the following text, which has nothing to do with alleged gravity)) Tags: Reverted Mobile edit Mobile web edit
- diffhist Prime number 20:41 +6 Libcub talk contribs (→Sieves: +known (could have existed without being known in the modern day)) Tag: Visual edit
- diffhist Peano axioms 20:35 +74 2601:204:f181:9410:d914:2e17:825f:8dd4 talk (clarified wording in caption to illustration)
- diffhist Ordinal analysis 20:24 +111 C7XWiki talk contribs (Add link to source →Table of ordinal analyses)
- diffhist Ordinal analysis 20:22 +559 C7XWiki talk contribs (→Table of ordinal analyses) Tags: Mobile edit Mobile web edit
- diffhist m Foundations of mathematics 19:51 −4 Arjayay talk contribs (Duplicate word removed)
- diffhist m Temperature 19:38 −17 Wiiformii talk contribs (Reverted edits by 2600:100B:B015:B980:B9B9:BE67:F48B:647 (talk) (AV)) Tags: AntiVandal Rollback
- diffhist Temperature 19:37 +17 2600:100b:b015:b980:b9b9:be67:f48b:647 talk Tags: Reverted Mobile edit Mobile web edit
- diffhist Constructive set theory 17:17 +66 178.165.170.6 talk (→Infinitude: Link to Necessary and sufficient conditions for finiteness)
- diffhist Constructive set theory 17:03 +85 178.165.170.6 talk (→Infinitude)
- diffhist Logical disjunction 16:57 +4 Macrakis talk contribs (deitalicize in Redirect for clarity) Tag: 2017 wikitext editor
- diffhist Logical disjunction 16:56 −27 Macrakis talk contribs (clearer hatnote) Tag: Visual edit
- diffhist m Term logic 16:42 −32 A68-n talk contribs Tag: Visual edit
- diffhist Logical disjunction 16:40 0 Marcin Rychlewicz talk contribs Tags: Visual edit Mobile edit Mobile web edit
- diffhist Quadratic formula 16:13 +3 MathOwl talk contribs Tags: Manual revert Mobile edit Mobile web edit
- diffhist m Turing machine 16:11 +4 Hooman Mallahzadeh talk contribs (→Description)
- diffhist Quadratic formula 16:11 −3 MathOwl talk contribs Tags: Reverted Mobile edit Mobile web edit
- diffhist Halting problem 15:54 +25 ClassA42 talk contribs (Corrected the incorrect claim about the impact of the proof on "practical computing". Please see the "Talk" page at " Misleading sentence?!".)
- diffhist Willard Van Orman Quine 14:50 +6 Thewikibeagles talk contribs
- diffhist Willard Van Orman Quine 14:49 −3 Thewikibeagles talk contribs
- diffhist Brahmagupta 14:35 +25,533 RegentsPark talk contribs (Restored revision 1226557934 by Egsan Bacon (talk): Rvt) Tags: Twinkle Undo
- diffhist m Injective function 14:07 0 Oneequalsequalsone talk contribs (→Injections may be made invertible) Tag: Visual edit
- diffhist Brahmagupta 14:06 −36 103.190.8.224 talk (Citations Pickover, Clifford (2008). Archimedes to Hawking: Laws of Science and the Great Minds Behind Them. Oxford University Press. p. 105. ISBN 978-0-19-979268-9. Bose, Mainak Kumar (1988). Late classical India. A. Mukherjee & Co.[page needed] Sen, Amartya (2005). The Argumentative Indian. Allen Lane. p. 29. ISBN 978-0-7139-9687-6. Thurston, Hugh (1993). Early Astronomy. New York: Springer-Verlag. ISBN 978-0-387-94107-3.[page needed][failed verification] Bradley, Michael. The Birth of M) Tags: Reverted section blanking Visual edit Mobile edit Mobile web edit
- diffhist Brahmagupta 14:03 −1,931 103.190.8.224 talk (In chapter seven of his Brāhmasphuṭasiddhānta, entitled Lunar Crescent, Brahmagupta rebuts the idea that the Moon is farther from the Earth than the Sun. [clarification needed] He does this by explaining the illumination of the Moon by the Sun. 1. If the moon were above the sun, how would the power of waxing and waning, etc., be produced from calculation of the longitude of the moon? The near half would always be bright. 2. In the same way that the half seen by the sun of a pot standing in su) Tags: Reverted Visual edit Mobile edit Mobile web edit
- diffhist Brahmagupta 14:02 −1,391 103.190.8.224 talk (The earth on all its sides is the same; all people on the earth stand upright, and all heavy things fall down to the earth by a law of nature, for it is the nature of the earth to attract and to keep things, as it is the nature of water to flow ... If a thing wants to go deeper down than the earth, let it try. The earth is the only low thing, and seeds always return to it, in whatever direction you may throw them away, and never rise upwards from the earth.) Tags: Reverted references removed Visual edit Mobile edit Mobile web edit
- diffhist Brahmagupta 14:01 −2,108 103.190.8.224 talk (2.2–5. The sines: The Progenitors, twins; Ursa Major, twins, the Vedas; the gods, fires, six; flavors, dice, the gods; the moon, five, the sky, the moon; the moon, arrows, suns [...] Here Brahmagupta uses names of objects to represent the digits of place-value numerals, as was common with numerical data in Sanskrit treatises. Progenitors represents the 14 Progenitors ("Manu") in Indian cosmology or 14, "twins" means 2, "Ursa Major" represents the seven stars of Ursa Major or 7, "Vedas" refers t) Tags: Reverted Visual edit Mobile edit Mobile web edit
- diffhist Brahmagupta 14:00 −1,208 103.190.8.224 talk (After giving the value of pi, he deals with the geometry of plane figures and solids, such as finding volumes and surface areas (or empty spaces dug out of solids). He finds the volume of rectangular prisms, pyramids, and the frustum of a square pyramid. He further finds the average depth of a series of pits. For the volume of a frustum of a pyramid, he gives the "pragmatic" value as the depth times the square of the mean of the edges of the top and bottom faces, and he gives the "superficial" v) Tags: Reverted Visual edit Mobile edit Mobile web edit
- diffhist Brahmagupta 14:00 −1,501 103.190.8.224 talk (Brahmagupta continues, 12.23. The square-root of the sum of the two products of the sides and opposite sides of a non-unequal quadrilateral is the diagonal. The square of the diagonal is diminished by the square of half the sum of the base and the top; the square-root is the perpendicular [altitudes]. So, in a "non-unequal" cyclic quadrilateral (that is, an isosceles trapezoid), the length of each diagonal is √pr + qs. He continues to give formulas for the lengths and areas of geometric figur) Tags: Reverted Visual edit Mobile edit Mobile web edit
- diffhist Brahmagupta 13:59 −1,223 103.190.8.224 talk (12.21. The approximate area is the product of the halves of the sums of the sides and opposite sides of a triangle and a quadrilateral. The accurate [area] is the square root from the product of the halves of the sums of the sides diminished by [each] side of the quadrilateral. So given the lengths p, q, r and s of a cyclic quadrilateral, the approximate area is p + r/2 · q + s/2 while, letting t = p + q + r + s/2, the exact area is √(t − p)(t − q)(t − r)(t − s). Although Brahmagupta does not) Tags: Reverted references removed Visual edit Mobile edit Mobile web edit
- diffhist Brahmagupta 13:58 −2,844 103.190.8.224 talk (Using his identity and the fact that if (x1, y1) and (x2, y2) are solutions to the equations x2 − Ny2 = k1 and x2 − Ny2 = k2, respectively, then (x1x2 + Ny1y2, x1y2 + x2y1) is a solution to x2 − Ny2 = k1k2, he was able to find integral solutions to Pell's equation through a series of equations of the form x2 − Ny2 = ki. Brahmagupta was not able to apply his solution uniformly for all possible values of N, rather he was only able to show that if x2 − Ny2 = k has an integer solution for k = ±1, ±2) Tags: Reverted references removed Visual edit Mobile edit Mobile web edit
- diffhist Brahmagupta 13:57 −1,568 103.190.8.224 talk (12.39. The height of a mountain multiplied by a given multiplier is the distance to a city; it is not erased. When it is divided by the multiplier increased by two it is the leap of one of the two who make the same journey. Or, in other words, if d = mx/x + 2, then a traveller who "leaps" vertically upwards a distance d from the top of a mountain of height m, and then travels in a straight line to a city at a horizontal distance mx from the base of the mountain, travels the same distance as one) Tags: Reverted Visual edit Mobile edit Mobile web edit
- diffhist Brahmagupta 13:56 −6,594 103.190.8.224 talk (multiplicand is repeated like a string for cattle, as often as there are integrant portions in the multiplier and is repeatedly multiplied by them and the products are added together. It is multiplication. Or the multiplicand is repeated as many times as there are component parts in the multiplier. Indian arithmetic was known in Medieval Europe as modus Indorum meaning "method of the Indians". In the Brāhmasphuṭasiddhānta, four methods for multiplication were described, including gomūtrikā, whi) Tags: Reverted Visual edit Mobile edit Mobile web edit
- diffhist Foundations of mathematics 13:56 +311 D.Lazard talk contribs (→top: Fixing the two first paragraphs in a way that can be accepted by mathematicians)
- diffhist Brahmagupta 13:56 −3,286 103.190.8.224 talk (18.44. Diminish by the middle [number] the square-root of the rupas multiplied by four times the square and increased by the square of the middle [number]; divide the remainder by twice the square. [The result is] the middle [number]. 18.45. Whatever is the square-root of the rupas multiplied by the square [and] increased by the square of half the unknown, diminished that by half the unknown [and] divide [the remainder] by its square. [The result is] the unknown. which are, respectively, soluti) Tags: Reverted Visual edit Mobile edit Mobile web edit
- diffhist Brahmagupta 13:55 −1,843 103.190.8.224 talk (Bhillamala was the capital of the Gurjaradesa, the second-largest kingdom of Western India, comprising southern Rajasthan and northern Gujarat in modern-day India. It was also a centre of learning for mathematics and astronomy. He became an astronomer of the Brahmapaksha school, one of the four major schools of Indian astronomy during this period. He studied the five traditional Siddhantas on Indian astronomy as well as the work of other astronomers including Aryabhata I, Latadeva, Pradyumna, Va) Tags: Manual revert Reverted Visual edit Mobile edit Mobile web edit
- diffhist Schröder–Bernstein theorem 12:47 −67 Oneequalsequalsone talk contribs (→Proof: removing reference to removed section and {{Clear}} template) Tag: 2017 wikitext editor
- diffhist Brahmagupta 12:08 +15,726 Egsan Bacon talk contribs (Reverted 5 pending edits by 103.190.8.224 to revision 1226520275 by CycloneYoris: unexplained removal of a great deal of material) Tag: Manual revert