From owner-chemistry@ccl.net Wed Jan 24 07:54:00 2018 From: "Mikael Johansson mikael.johansson ~ iki.fi" To: CCL Subject: CCL: Historical anecdote on non-convergence of SCF Message-Id: <-53144-180124075142-28688-+RTlcYyHOqYSliXm1GOswg]~[server.ccl.net> X-Original-From: Mikael Johansson Content-Language: en-US Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=utf-8; format=flowed Date: Wed, 24 Jan 2018 14:51:28 +0200 MIME-Version: 1.0 Sent to CCL by: Mikael Johansson [mikael.johansson_+_iki.fi] Hello All, I am trying to find out details on an anecdote I heard many many years ago, while still a student. I remember it very roughly like this: Hartree was in front of a judge or jury for some minor offence, and when asked what he does, his lawyer said that he solves self-consistent field equations; "and, Your honour, they do not converge!". Therefore, all charges were dropped. I was unsuccesful in googling up the story, so I assume at least one major component, probably more, of the story as I remember it is wrong; it might have been someone else (Hartree's father? Fock?), it might not have been at court, he might not have had a lawyer representative, and so on. The part I am quite sure of is that someone at some point got off easy because some equations did not converge :-) Anyone out there with a better memory? Cheers,     Mikael -- Dr. Mikael Johansson Academy Researcher Department of Chemistry University of Helsinki http://blogs.helsinki.fi/johansson-group From owner-chemistry@ccl.net Wed Jan 24 12:04:01 2018 From: "Dr.N Sukumar n.sukumar!^!snu.edu.in" To: CCL Subject: CCL: Historical anecdote on non-convergence of SCF Message-Id: <-53145-180124114121-15685-WeQQnrH+3FMreGWInFoU4g a server.ccl.net> X-Original-From: "Dr.N Sukumar" Content-Type: multipart/alternative; boundary="94eb2c1cdf80d34222056388543c" Date: Wed, 24 Jan 2018 22:11:12 +0530 MIME-Version: 1.0 Sent to CCL by: "Dr.N Sukumar" [n.sukumar- -snu.edu.in] --94eb2c1cdf80d34222056388543c Content-Type: text/plain; charset="UTF-8" If all charges were dropped, he would have ended up with a free particle... which should easily converge :-) *N. SukumarProfessor of ChemistryDirector, Center for Informatics**Shiv Nadar University, India* On Wed, Jan 24, 2018 at 6:21 PM, Mikael Johansson mikael.johansson ~ iki.fi wrote: > > Sent to CCL by: Mikael Johansson [mikael.johansson_+_iki.fi] > > Hello All, > > I am trying to find out details on an anecdote I heard many many years > ago, while still a student. > > I remember it very roughly like this: Hartree was in front of a judge or > jury for some minor offence, and when asked what he does, his lawyer said > that he solves self-consistent field equations; "and, Your honour, they do > not converge!". Therefore, all charges were dropped. > > I was unsuccesful in googling up the story, so I assume at least one major > component, probably more, of the story as I remember it is wrong; it might > have been someone else (Hartree's father? Fock?), it might not have been at > court, he might not have had a lawyer representative, and so on. The part I > am quite sure of is that someone at some point got off easy because some > equations did not converge :-) > > Anyone out there with a better memory? > > Cheers, > Mikael > > -- > Dr. Mikael Johansson > Academy Researcher > Department of Chemistry > University of Helsinki > http://blogs.helsinki.fi/johansson-grouphttp://www.ccl.net/chemistry/sub_unsub.shtmlConferences: http://server.ccl.net/chemistr > y/announcements/conferences/> > > --94eb2c1cdf80d34222056388543c Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
If all charges were dropped, he would have ended up with = a free particle... which should easily converge :-)

N. Sukumar
Professor of Chemistry
Director, Center for Informati= cs
Shiv Nadar University, India


On Wed, Jan 24, 2018 at 6:21 PM, Mikael Joha= nsson mikael.johansson ~ iki.fi <owner= -chemistry=-=ccl.net> wrote:
=
Sent to CCL by: Mikael Johansson [mikael.johansson_+_iki.fi]

Hello All,

I am trying to find out details on an anecdote I heard many many years ago,= while still a student.

I remember it very roughly like this: Hartree was in front of a judge or ju= ry for some minor offence, and when asked what he does, his lawyer said tha= t he solves self-consistent field equations; "and, Your honour, they d= o not converge!". Therefore, all charges were dropped.

I was unsuccesful in googling up the story, so I assume at least one major = component, probably more, of the story as I remember it is wrong; it might = have been someone else (Hartree's father? Fock?), it might not have bee= n at court, he might not have had a lawyer representative, and so on. The p= art I am quite sure of is that someone at some point got off easy because s= ome equations did not converge :-)

Anyone out there with a better memory?

Cheers,
=C2=A0=C2=A0=C2=A0 Mikael

--
Dr. Mikael Johansson
Academy Researcher
Department of Chemistry
University of Helsinki
http://blogs.helsinki.fi/johansson-group



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