Haros and Farey
in [Math]
|
Prev: Optimal piecewise linear approximations to sqrt(x^2 + y^2), x >= y >= 0
Next: PRIVATE NET TO EXPAND WEB SPACE: 'mmm.web(TM)' seeks to replace.com
From: Scott on 15 Sep 2009 10:03 C. Haros discovered what is now known as the Farey sequence 14 years before Farey. Does anybody know what the C. stands for? Thanks for any insight. Cheers, Scott
From: Gerry Myerson on 16 Sep 2009 20:35 In article <defa96cd-fdc6-4d35-b06d-7b3fa1ef4ab4(a)p9g2000vbl.googlegroups.com>, Scott <sguthery(a)gmail.com> wrote: > C. Haros discovered what is now known as the Farey sequence 14 years > before Farey. > > Does anybody know what the C. stands for? > > Thanks for any insight. No insight, but the full citation is, C. Haros, Tables pour evaluer une fraction ordinaire avec autand de decimals qu'on voudra; et pour trover la fraction ordinaire la plus simple, et qui a approche sensiblement d'une fraction decimale, J. Ecole Polytechn. 4 (1802), 364-368. There may possibly be some information in M. Bruckheimer and A. Arcavi, Farey series and Pick's area theorem, The Math. Intelligencer 17 (2) (1995), 64-67. -- Gerry Myerson (gerry(a)maths.mq.edi.ai) (i -> u for email)
From: David Bernier on 16 Sep 2009 22:40 Gerry Myerson wrote: > In article > <defa96cd-fdc6-4d35-b06d-7b3fa1ef4ab4(a)p9g2000vbl.googlegroups.com>, > Scott <sguthery(a)gmail.com> wrote: > >> C. Haros discovered what is now known as the Farey sequence 14 years >> before Farey. >> >> Does anybody know what the C. stands for? >> >> Thanks for any insight. > > No insight, but the full citation is, > > C. Haros, Tables pour evaluer une fraction ordinaire avec autand de > decimals qu'on voudra; et pour trover la fraction ordinaire la plus > simple, et qui a approche sensiblement d'une fraction decimale, J. > Ecole Polytechn. 4 (1802), 364-368. > > There may possibly be some information in > > M. Bruckheimer and A. Arcavi, Farey series and Pick's area theorem, The > Math. Intelligencer 17 (2) (1995), 64-67. > From Gallica, the French National (Digital) Library, I was able to download "Journal de l'ecole polytechnique" from 1802. Around pages 358 to 365, there are Notices of "ouvrages" or monographs, generally in physics and mathematics. Many surnames are preceded by "C.en", with 'en' in smaller-size type and elevated, a bit like an exponent; there are: C.en Garnier , C.en Fourier (just back from Egypt), " C.ens Monge et Hachette " and so on. Also, month names of the "Revolutionary calendar" are used: thermidor, frimaire and so on. I believe I remember from looking at old books around the time when this calendar was used reading "Citoyen this", "Citoyen that", etc. Citoyen translates into English as citizen. So it could be that C. Haros stands for Citizen Haros. David Bernier
From: Gerry Myerson on 17 Sep 2009 01:30 In article <h8s7iq0tq4(a)news3.newsguy.com>, David Bernier <david250(a)videotron.ca> wrote: > Gerry Myerson wrote: > > In article > > <defa96cd-fdc6-4d35-b06d-7b3fa1ef4ab4(a)p9g2000vbl.googlegroups.com>, > > Scott <sguthery(a)gmail.com> wrote: > > > >> C. Haros discovered what is now known as the Farey sequence 14 years > >> before Farey. > >> > >> Does anybody know what the C. stands for? > >> > >> Thanks for any insight. > > > > No insight, but the full citation is, > > > > C. Haros, Tables pour evaluer une fraction ordinaire avec autand de > > decimals qu'on voudra; et pour trover la fraction ordinaire la plus > > simple, et qui a approche sensiblement d'une fraction decimale, J. > > Ecole Polytechn. 4 (1802), 364-368. > > > > There may possibly be some information in > > > > M. Bruckheimer and A. Arcavi, Farey series and Pick's area theorem, The > > Math. Intelligencer 17 (2) (1995), 64-67. > > > > From Gallica, the French National (Digital) Library, I was able to > download "Journal de l'ecole polytechnique" from 1802. > > Around pages 358 to 365, there are Notices of "ouvrages" or > monographs, generally in physics and mathematics. > > Many surnames are preceded by "C.en", with 'en' in smaller-size type and > elevated, a bit like an exponent; there are: > C.en Garnier , C.en Fourier (just back from Egypt), > " C.ens Monge et Hachette " and so on. > > Also, month names of the "Revolutionary calendar" are used: > thermidor, frimaire and so on. I believe I remember from looking at > old books around the time when this calendar was used reading > "Citoyen this", "Citoyen that", etc. Citoyen translates > into English as citizen. So it could be that C. Haros stands > for Citizen Haros. > > David Bernier That's terrific. I remember thinking that something from a French journal a few decades later had been written by an M Lebesgue, until I noticed that all the authors seemed to have first initial M, at which point it dawned on me that M stood for Monsieur, rather than for a first name. So maybe we now know what C stands for, but we still don't know Haros' first name! -- Gerry Myerson (gerry(a)maths.mq.edi.ai) (i -> u for email)
From: secondmouse on 17 Sep 2009 12:17
On 17 Sep, 06:30, Gerry Myerson <ge...(a)maths.mq.edi.ai.i2u4email> wrote: > In article <h8s7iq0...(a)news3.newsguy.com>, > David Bernier <david...(a)videotron.ca> wrote: > > > > > > > Gerry Myerson wrote: > > > In article > > > <defa96cd-fdc6-4d35-b06d-7b3fa1ef4...(a)p9g2000vbl.googlegroups.com>, > > > Scott <sguth...(a)gmail.com> wrote: > > > >> C. Haros discovered what is now known as the Farey sequence 14 years > > >> before Farey. > > > >> Does anybody know what the C. stands for? > > > >> Thanks for any insight. > > > > No insight, but the full citation is, > > > > C. Haros, Tables pour evaluer une fraction ordinaire avec autand de > > > decimals qu'on voudra; et pour trover la fraction ordinaire la plus > > > simple, et qui a approche sensiblement d'une fraction decimale, J. > > > Ecole Polytechn. 4 (1802), 364-368. > > > > There may possibly be some information in > > > > M. Bruckheimer and A. Arcavi, Farey series and Pick's area theorem, The > > > Math. Intelligencer 17 (2) (1995), 64-67. > > > From Gallica, the French National (Digital) Library, I was able to > > download "Journal de l'ecole polytechnique" from 1802. > > > Around pages 358 to 365, there are Notices of "ouvrages" or > > monographs, generally in physics and mathematics. > > > Many surnames are preceded by "C.en", with 'en' in smaller-size type and > > elevated, a bit like an exponent; there are: > > C.en Garnier , C.en Fourier (just back from Egypt), > > " C.ens Monge et Hachette " and so on. > > > Also, month names of the "Revolutionary calendar" are used: > > thermidor, frimaire and so on. I believe I remember from looking at > > old books around the time when this calendar was used reading > > "Citoyen this", "Citoyen that", etc. Citoyen translates > > into English as citizen. So it could be that C. Haros stands > > for Citizen Haros. > > > David Bernier > > That's terrific. I remember thinking that something from a French > journal a few decades later had been written by an M Lebesgue, > until I noticed that all the authors seemed to have first initial M, > at which point it dawned on me that M stood for Monsieur, rather > than for a first name. So maybe we now know what C stands for, > but we still don't know Haros' first name! > > -- > Gerry Myerson (ge...(a)maths.mq.edi.ai) (i -> u for email)- Hide quoted text - > > - Show quoted text - I think the C. stands for Charles if the following is to be believed: http://www.math.rutgers.edu/~zeilberg/KnuthMiddleNames.html |