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Jean-Michel

Dr. jean-michel collard

75 Reputation

7 Badges

1 years, 38 days
Cergy (suburb of Paris), France
Contact Dr. jean-michel collard
Ph.D. in Mathematics (Differentiel Topology) Master Degree in Cosmology

MaplePrimes Activity


These are Posts that have been published by Jean-Michel

ridiculous !!!!!!!!!!!!...

Jean-Michel 75 Maple 2026
deleted duplicate-question
April 28 2026
0 1

my second Question was deleted by a "moderator" !!!!!!!!! what is this censorship????????? (spam i was told)

> 

NULL
restart;

Error, invalid input: diff received theta(s), which is not valid for its 2nd argument

`Christoffel symbols:`

`Geodesic equations on the unit sphere:`

diff(diff(theta(s), s), s) = 0

diff(diff(phi(s), s), s) = 0

NULL

Download geodesics.mw

it contained only the file geodesics.mw

Jean-Michel 

Maple increment/decrement...

Jean-Michel 75 Maple
syntax
January 15 2026
0 0

Hello all,

This is a post for a software change.

I think it would be great if Maple had some constructions for :

i++

++i

i--

--i and idem for multiply and divide.

I guess it is too late for Maple 2026, but maybe this could be added for 2027.

i++ does work however.

Have a great day.

Jean-Michel

PS:You must have a reputation score of at least 100 to add a new tag. (???)

Sorry : I just see that this  is already implemented in Maple.

Thank you

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