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The pattern of numbers that forms Pascal's triangle was known well before Pascal's time. The Persian mathematician Al-Karaji (953–1029) wrote a now-lost book which contained the first formulation of the binomial coefficients and the first description of Pascal's triangle.[5][6][7] It was later repeated by Omar Khayyám (1048–1131), another Persian mathematician; thus the triangle is also referred to as Khayyam's triangle (مثلث خیام) in Iran.[8]Pascal's triangle was known in China during the early 11th century through the work of the Chinese mathematician Jia Xian (1010–1070). During the 13th century, Yang Hui (1238–1298) defined the triangle, and it is known as Yang Hui's triangle (杨辉三角; 楊輝三角) in China.[9]
In Europe, Pascal's triangle appeared for the first time in the Arithmetic of Jordanus de Nemore (13th century).[10] The binomial coefficients were calculated by Gersonides during the early 14th century, using the multiplicative formula for them.[11] Petrus Apianus (1495–1552) published the full triangle on the frontispiece of his book on business calculations in 1527.[12] Michael Stifel published a portion of the triangle (from the second to the middle column in each row) in 1544, describing it as a table of figurate numbers.[11] In Italy, Pascal's triangle is referred to as Tartaglia's triangle, named for the Italian algebraist Niccolò Fontana Tartaglia (1500–1577), who published six rows of the triangle in 1556.[11] Gerolamo Cardano also published the triangle as well as the additive and multiplicative rules for constructing it in 1570.[11]
On 10 May 2024, at 02:05, Larry T. <ora...@gmail.com> wrote:
I am not part of this project because of lack of time but I would like to bring to your attention that few years ago I was contacted by a Chinese fellow who was very excited about apparent connection of the periodic table sequences to a Pascal Triangle that actually originate in China and is called Yang Hui's triangle.
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The temptation to read more into the shape of the table than is really there is almost overwhelming. Even someone as great as Werner was tempted (1905). Having postulated a missing element between H and He, he decided to perfect the symmetry of his table by guaranteeing that rows of differing length always occurred in pairs. Consequently, he further postulated a row of three missing elements lying above the H-X-He row.
Jensen WB 1986, Classification, symmetry and the periodic table, Computers & Mathematics with Applications, vol. 12B, no. 12, pp. 487–510 (508)Wemer A 1905, Beitrag zum Aufbau des periodischen Systems. Ber. Deut. Chem. Ges. vol. 38, pp. 914–921, 2022–2027.
Rydberg JR 1913, Untersuchungen über das system der grundstoffe, Lunds Univ. Ärsskrift, vol. 9, no. 18. In French: 1914, Recherches sur le système des éléments, Journal de Chimie Physique, vol. 12, p. 585
Saz E 1931, Iberica, vol. 35, p. 186. The image is from: Puig I 1935, Elementos de Química, 4a série, Livraria do Globo, Porto Alegre; see https://rsdjournal.org/index.php/rsd/article/view/25824/22612, p. 7
Baca Mendoza O 1953, Leyes Genéticas de los elementos Químicos, Nuevo Sistema Periódico, National University of Cusco, https://www.meta-synthesis.com/webbook/35_pt/Mendoza_PT.pdf, accessed May 12, 2024
On 11 May 2024, at 01:34, Julio gutierrez samanez <kut...@gmail.com> wrote:Dear René:I am not in this project either, perhaps because I am ignorant of much of the philosophy of the Tao, I came somewhat closer to it during my stays in Japan (1993) and China (2023), where I observed, - despite my Western rationalist training - the profound mysticism oriental that made me reflect on indigenous Andean American mysticism. That predisposition to understand the world as something dual, in which the "unity" is not "one" but "two" or the "pair", something that comes from the art of flat weave, since there the unit is formed by two warp threads: one "up" and the other "down" thread, alternately, to make a figure with the "weft" thread. This is clearly seen. especially when both threads are of different colors.The indigenous American peoples, in many things, distinguish what is "female" from what is "male", like yin and yang, oriental, but with the difference that they are not perfect symmetrical like "male, male" or "female." , female", but the complementary pair - "female and male". They distinguish this in plants, animals and in society, because there the "citizen" is the one who has a "partner", the single man or woman are still considered dependent on their parents.In the periodic table I found something similar, the even periods are actually units of the same number of elements, but at a different level or in another spiral, on a different plane of development: "female and male". And that, when completed in number, give rise to the birth of another pair or binode, because a new "daughter" entity is "bred" between them, which did not exist before, and which makes the difference. Therefore, new periods grow in number and develop in a complementary way on different planes or levels.While in the Tao things and phenomena seem to me to be pendulous, (repetition, without growth).In Native American thought, things develop, grow, and become harmoniously complicated, both complementary, like "woman and man": a weak entity and a strong one that give rise to a new offspring.This "game" or behavior is what I show in my graphics, already well known to you. Both in the Binodic Step form (function 4n^2) and in its development (function (4(Sum n^2). And in a table that I called "Genome of Matter" that Mark Leach published, and also in my video " Spiral of chemical elements".Perhaps you, friend René, can consider something of these that you find necessary, for that "ideal periodic table" to have something from all the cultures of this world.Julio