Talk:Pierre Hérigone

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citation 1 has disappeared! 203.218.37.45 01:04, 21 April 2006 (UTC)

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phoenetic major system

I haven't had the time to track down a copy of the original text, to cross reference the details regarding Herigone's specific version of the Mnemonic major system but the Wiki page indicates:

"Hérigone also created a number alphabet for remembering long numbers in which phonemes were assigned to different numbers, while the vowels were supplied by the memorizer: 1 (t, d), 2 (n), 3 (m), 4 (r), 5 (l), 6 (j, ch, sh), 7 (c, k, g), 8 (f, v, ph), 9 (p, b), 10 (z, s)."

while the https://mathshistory.st-andrews.ac.uk/Biographies/Herigone/ reference indicates that

"He also introduced a code by which numbers were translated into words to aid memorising them. The code was as follows: 1=p,a; 2=b,e; 3=c,i; 4=d,o; 5=t,u; 6=f,ar,ra; 7=g,er,re; 8=l,ir,ri; 9=m,or,ro; 0=n,ur,ru."

I strongly suspect that the statement/version as it appears on the page as of 2021-04-03 is, in fact, incorrect. The statement that the vowels were supplied by the memorizer is also highly suspect and requires a better reference as the quoted section just above appears to specify the vowels specifically. I've only seen evidence of vowels beginning to be selected "ad libitum" in Lewis Carroll's modified version of Richard Grey's system much later. This pattern was better established by the time of Francis Fauvel Gouraud.

To help himself to remember dates, he devised a system of mnemonics, which he circulated among his friends. As it has never been published, and as some of my readers may find it useful, I reproduce it here. My "Memoria Technica" is a modification of Gray's; but, whereas he used both consonants and vowels to represent digits, and had to content himself with a syllable of gibberish to represent the date or whatever other number was required, I use only consonants, and fill in with vowels ad libitum, and thus can always manage to make a real word of whatever has to be represented.

—via The Life and Letters of Lewis Carroll by Stuart Dodgson Collingwood (1899) at https://via.hypothes.is/http://www.gutenberg.org/files/11483/11483-h/11483-h.htm#annotations:tgLJupPxEeuvbFew445IXA

Snark35 (talk) 19:09, 3 April 2021 (UTC)