# Zoom Discussion / Session **URL:** \ **Category:** General Discussion\ **Created:** [September 21, 2023, 3:00pm UTC](https://community.freefem.org/t/zoom-discussion-session/2719 "2023-09-21T15:00:54Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\ **Post date:** [September 21, 2023, 3:00pm UTC](https://community.freefem.org/t/zoom-discussion-session/2719/1 "2023-09-21T15:00:54Z")
Dear all, On first Wednesday for each month (with some exception) , I will open a zoom visio session od 2 hours form 10h to 12h (Paris time), to speak about FreeFEM++. Novelty, Futur, Problem, Bug,. Remark (it is a short session, so please prepare your intervention before), put a abstract on this Topic, So the next session will be on October the 4 at 10H ( CEST) I will put the zoom info on the community site in the morning for connection. ---
**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\ **Post date:** [October 3, 2023, 7:12am UTC](https://community.freefem.org/t/zoom-discussion-session/2719/2 "2023-10-03T07:12:48Z")
Dear, the Zoom link for to morrow Frédéric Hecht vous invite à une réunion Zoom planifiée. Sujet: Zoom FreeFem++ - Frédéric Hecht Heure: 4 oct. 2023 09:45 AM Paris Rejoindre Zoom Réunion > **[Join our Cloud HD Video Meeting](https://cnrs.zoom.us/j/97425090023?pwd=WU5NOUdjdzh1ZFhhNHN6cmdzb3dUQT09)** > > Zoom is the leader in modern enterprise video communications, with an easy, reliable cloud platform for video and audio conferencing, chat, and webinars across mobile, desktop, and room systems. Zoom Rooms is the original software-based conference... ID de réunion: 974 2509 0023 Code secret: EZmh6S Plan of the visio: 1. Introduction of the session Some new about The FreeFEM day in Paris / an Zoom the 7 and 8 dec 2023. 2. New about the development Web site and exemple = P-H Tournier 3. the idea about the future 4. Some Question and Remark: Please add a comment in this discussion session, to prepare a answer. PS: for the new user, if you have specific problem , if you now if it is a FreeFEM++ good tool to solve it, we will try to give a answer! ---
**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\ **Post date:** [November 7, 2023, 10:15pm UTC](https://community.freefem.org/t/zoom-discussion-session/2719/3 "2023-11-07T22:15:03Z")
The new zoom session is on 8 novembre from 10h00 to 12h00 (Paris Time) > **[Join our Cloud HD Video Meeting](https://cnrs.zoom.us/j/85107127137?pwd=S0Z5STlTejFyRHYvc1RUcWxPbE00Zz09)** > > Zoom is the leader in modern enterprise video communications, with an easy, reliable cloud platform for video and audio conferencing, chat, and webinars across mobile, desktop, and room systems. Zoom Rooms is the original software-based conference... Plan of the visio: 1. Introduction of the session Some new about The FreeFEM day in Paris / an Zoom the 7 and 8 dec 2023. 2. New about the last development 3. the idea about the future 4. Some Question and Remark: Please add a comment in this discussion session, to prepare a answer. PS: for the new user, if you have specific problem , if you now if it is a FreeFEM++ good tool to solve it, we will try to give a answer! ---
**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\ **Post date:** [January 23, 2024, 6:06pm UTC](https://community.freefem.org/t/zoom-discussion-session/2719/4 "2024-01-23T18:06:22Z")
# The zoom discussion session Change now last monday of month form 10h to 11h30 (Paris time) Frédéric Hecht vous invite à une réunion Zoom planifiée. Sujet: Zoom meeting FreeFEM de Frédéric Hecht Heure: 29 janv. 2024 10:00 AM Paris Chaque mois le Dernier Lundi 29 janv. 2024 10:00 AM 26 févr. 2024 10:00 AM 25 mars 2024 10:00 AM 29 avr. 2024 10:00 AM 27 mai 2024 10:00 AM 24 juin 2024 10:00 AM Veuillez télécharger et importer les fichiers iCalendar (.ics) suivants dans votre système de calendrier. Mensuellement: [https://cnrs.zoom.us/meeting/tJ0sde-gqTosGN0dyl24GqexGRE7zVag\_TTu/ics?icsToken=98tyKuChrzksEtOUthuORox5BYjoM\_zwtn5djY0NmAbpUXR0cwbuEdBnZahJEd\_v](https://cnrs.zoom.us/meeting/tJ0sde-gqTosGN0dyl24GqexGRE7zVag_TTu/ics?icsToken=98tyKuChrzksEtOUthuORox5BYjoM_zwtn5djY0NmAbpUXR0cwbuEdBnZahJEd_v) Rejoindre Zoom Réunion > **[Join our Cloud HD Video Meeting](https://cnrs.zoom.us/j/99126871629?pwd=cWZHVnIyVklndllmY2hWQ0NaTGsxdz09)** > > Zoom is the leader in modern enterprise cloud communications. ID de réunion: 991 2687 1629 Code secret: ff++24 Plan of the visio: 1. Introduction of the session Some new about The FreeFEM . 2. New about the last development 3. the idea about the future 4. Some Question and Remark: Please add a comment in this discussion session, to prepare a answer. PS: for the new user, if you have specific problem , if you now if it is a FreeFEM++ good tool to solve it, we will try to give a answer! ---
**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\ **Post date:** [March 25, 2024, 7:24am UTC](https://community.freefem.org/t/zoom-discussion-session/2719/5 "2024-03-25T07:24:15Z")
Remember, the zoom discussion session is today a 10h00 (paris Time). It is open for every body. > **[Join our Cloud HD Video Meeting](https://cnrs.zoom.us/j/99126871629?pwd=cWZHVnIyVklndllmY2hWQ0NaTGsxdz09)** > > Zoom is the leader in modern enterprise video communications, with an easy, reliable cloud platform for video and audio conferencing, chat, and webinars across mobile, desktop, and room systems. Zoom Rooms is the original software-based conference... ---
**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\ **Post date:** [April 17, 2024, 7:40pm UTC](https://community.freefem.org/t/zoom-discussion-session/2719/6 "2024-04-17T19:40:30Z")
Remark, The next session will on april 22 a 10h Paris Time The Zoom session planifiée. Rejoindre Zoom Réunion > **[Join our Cloud HD Video Meeting](https://cnrs.zoom.us/j/98013070405?pwd=OXRBeFFlYzlOaEZ2L1p2c1pUQzNZdz09)** > > Zoom is the leader in modern enterprise video communications, with an easy, reliable cloud platform for video and audio conferencing, chat, and webinars across mobile, desktop, and room systems. Zoom Rooms is the original software-based conference... ID de réunion: 980 1307 0405 Code secret: tky0gg Remark, If you have specific question please add answer to this discussion the plan is a usual FreeFEM news the next realizes, Open Discution remark the may session is 27 mai 2024 10:00 AM ---
**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\ **Post date:** [September 9, 2024, 10:07am UTC](https://community.freefem.org/t/zoom-discussion-session/2719/7 "2024-09-09T10:07:22Z")
Frédéric Hecht repose the FreeF\>Em zoom discution sessions for Novelty, Futur, Problem, Bug,. Remark (it is a short session, so please prepare your intervention before), put a abstract on this Topic, So the next session will be on sept the 30/2024 at 10H ( CEST) the zoom informations are The Zoom session planifiée. Sujet: FreeFem open Zoom meeting Heure: 30 sept. 2024 10:00 AM Paris Chaque mois le Dernier Lundi 30 sept. 2024 10:00 AM 28 oct. 2024 10:00 AM 25 nov. 2024 10:00 AM 30 déc. 2024 10:00 AM 27 janv. 2025 10:00 AM 24 févr. 2025 10:00 AM 31 mars 2025 10:00 AM 28 avr. 2025 10:00 AM 26 mai 2025 10:00 AM 30 juin 2025 10:00 AM Veuillez télécharger et importer les fichiers iCalendar (.ics) suivants dans votre système de calendrier. Mensuellement: [https://cnrs.zoom.us/meeting/tJAvduGqqDwoHddhm0xR9Qzyj8eo4RkOrCgW/ics?icsToken=98tyKuCsrDoiGNKSsh6ERowIAIj4WerwpmZBgqdZlBK1GxIKUxnvPLpHPeZNG\_fC](https://cnrs.zoom.us/meeting/tJAvduGqqDwoHddhm0xR9Qzyj8eo4RkOrCgW/ics?icsToken=98tyKuCsrDoiGNKSsh6ERowIAIj4WerwpmZBgqdZlBK1GxIKUxnvPLpHPeZNG_fC) Participer Zoom Réunion > **[Join our Cloud HD Video Meeting](https://cnrs.zoom.us/j/94218267273?pwd=CTKXknfcMbrbIkbmz9unUqmEcUWnWJ.1)** > > Zoom is the leader in modern enterprise video communications, with an easy, reliable cloud platform for video and audio conferencing, chat, and webinars across mobile, desktop, and room systems. Zoom Rooms is the original software-based conference... ID de réunion: 942 1826 7273 Code secret: FreeFEM25 ---
**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\ **Post date:** [October 25, 2024, 8:40am UTC](https://community.freefem.org/t/zoom-discussion-session/2719/8 "2024-10-25T08:40:47Z")
Sorry but the Monday 28 oct. 2024 10:00 AM i could not organize the zoom meeting because I will have not network. SO the next session will be on 25 nov. 2024 at 10:00 AM Frederic Hecht. ---
**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\ **Post date:** [November 24, 2024, 2:09pm UTC](https://community.freefem.org/t/zoom-discussion-session/2719/9 "2024-11-24T14:09:13Z")
remember the next session will be on 25 nov. 2024 at 10:00 AM of open zoom Discussion is the 25 nov. 2024 10:00 AM paris time Participer Zoom Réunion > **[Join our Cloud HD Video Meeting](https://cnrs.zoom.us/j/94218267273?pwd=CTKXknfcMbrbIkbmz9unUqmEcUWnWJ.1)** > > Zoom is the leader in modern enterprise video communications, with an easy, reliable cloud platform for video and audio conferencing, chat, and webinars across mobile, desktop, and room systems. Zoom Rooms is the original software-based conference... ID de réunion: 942 1826 7273 Code secret: FreeFEM25 ---
**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\ **Post date:** [March 28, 2025, 10:30am UTC](https://community.freefem.org/t/zoom-discussion-session/2719/10 "2025-03-28T10:30:58Z")
remember the next session will be on 31 mars 2025 10:00 AM Paris of open zoom Frédéric Hecht vous invite à une réunion Zoom programmée Last Monday of the month Sujet: FreeFem open Zoom meeting Heure: 31 mars 2025 10:00 AM Paris > **[Join our Cloud HD Video Meeting](https://cnrs.zoom.us/j/94218267273?pwd=CTKXknfcMbrbIkbmz9unUqmEcUWnWJ.1)** > > Zoom is the leader in modern enterprise video communications, with an easy, reliable cloud platform for video and audio conferencing, chat, and webinars across mobile, desktop, and room systems. Zoom Rooms is the original software-based conference... ID de réunion: 942 1826 7273 Code secret: FreeFEM25 The subject: FreeFEM news , and I will speak about mesh adaptive for exemple. ---
**Author:** ![Monirul25](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/monirul25/32/3287_2.png) [@Monirul25](https://community.freefem.org/u/Monirul25)\ **Post date:** [March 31, 2025, 3:52am UTC](https://community.freefem.org/t/zoom-discussion-session/2719/11 "2025-03-31T03:52:16Z")
Sir, it is be very grateful if you discuss how to find order of convergence and efficiency index in FF++. Also, how to implement Dofler marking scheme and refine in poisson codes. Details are in the following paper: [Numerical Methods Partial - 2019 - Cui - A posteriori error estimate for discontinuous Galerkin finite element method on.pdf](https://community.freefem.org/uploads/short-url/5FNZWOdzewHmkju8mFj3U4ndUZN.pdf) (1.7 MB)( page no. 9 ( 609 in pdf)) . Also, it will be very nice if you discuss how to implement time-space adaptive algorithm in a time dependent problem in FreeFem++ ( for example, heat equation). Details are in the following paper: [recovery-type-a-posteriori-error-estimation-of-an-adaptive-finite-element-method-for-cahn-hilliard-equation (1).pdf](https://community.freefem.org/uploads/short-url/4albaZ7CJ9jiTAnrmg6S87Gla3c.pdf) (1.7 MB) (Page-35 and 36) Thanks in advance sir!. ---
**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\ **Post date:** [May 26, 2025, 12:21pm UTC](https://community.freefem.org/t/zoom-discussion-session/2719/12 "2025-05-26T12:21:08Z")
REMARK the last Zoom Discussion / session before summer will be the Frédéric Hecht vous invite à une réunion Zoom programmée. Sujet: FreeFem open Zoom meeting Heure: 23 juin 2025 10:00 AM Paris Chaque mois le Dernier Lundi Occurrence(s) modifiée(s) : 23 juin 2025 10:00 AM (mis à jour) Veuillez télécharger et importer les fichiers iCalendar (.ics) suivants dans votre système de calendrier. Mensuellement: [https://cnrs.zoom.us/meeting/tJAvduGqqDwoHddhm0xR9Qzyj8eo4RkOrCgW/ics?icsToken=DDfBxi8v5GEQIU9PhwAALAAAAO3kWsxAGdgsn4Ns-hMbxDfGSZeMVyj3Fg67w38kBrI5d1VqPoYzNPIikicHOy\_do\_TgK4uKjg3WBROlljAwMDAwMQ](https://cnrs.zoom.us/meeting/tJAvduGqqDwoHddhm0xR9Qzyj8eo4RkOrCgW/ics?icsToken=DDfBxi8v5GEQIU9PhwAALAAAAO3kWsxAGdgsn4Ns-hMbxDfGSZeMVyj3Fg67w38kBrI5d1VqPoYzNPIikicHOy_do_TgK4uKjg3WBROlljAwMDAwMQ) Participer à la réunion Zoom [Launch Meeting - Zoom](https://cnrs.zoom.us/j/94218267273?pwd=CTKXknfcMbrbIkbmz9unUqmEcUWnWJ.1) ID de réunion: 942 1826 7273 Code secret: FreeFEM25 The subject is open, but try to think about problem or questionb. During the session of the 26 may we speak about. New about freefem++ ## A to set Dirichet boundary condition in 1 point (dot). A simple exemple [bc.edp](https://community.freefem.org/uploads/short-url/k9vpxs4tl7yePbU0o6hFPxZ17cf.edp) (497 Bytes) And a other exemple to > For the explanation of the tgv method works see [https://www.ljll.fr/hecht/ftp/5MM30/NotesdeCours5MM30.pdf](https://www.ljll.fr/hecht/ftp/5MM30/NotesdeCours5MM30.pdf) page 103 (sorry in french) ## make a pluging using a fortran function. Thank to F. Bouchut. The want to use a numerical flux coded in fortran. the fortran compressed code is [numflux.f.zip](https://community.freefem.org/uploads/short-url/xgsCvnfgrmQBsHVdJdMbGnXNQHK.zip) (2.9 KB) the freefem cpp zip interface is [FBouchut.cpp.zip](https://community.freefem.org/uploads/short-url/959dapQSLZJEz667DmBnTSPffRk.zip) (2.1 KB) the exemple is : [FBouchut.edp](https://community.freefem.org/uploads/short-url/YBI2FjHL0M7IWfxFKFqXifhZTu.edp) (100 Bytes) and the code to compile the pluging (need a compile with all compile) ```auto ff-c++ FFLAGS=-ffree-form numflux.f FBouchut.cpp ``` and to test ```auto FreeFem++ FBouchut.edp Host-001:FreeVol-2025 hecht$ FreeFem++ FBouchut.edp -- FreeFem++ v4.15 (Lun 28 avr 2025 13:31:12 CEST - git v4.15-57-g03b1e0291) file : FBouchut.edp Load: lg_fem lg_mesh lg_mesh3 eigenvalue 1 : load "FBouchut" 2 : 3 : real[int] A=[1,2,3,4,5]; 4 : real[int] B(10); 5 : 6 : Flux(A,B); 7 : cout << " B = " << B << endl; sizestack + 1024 =1136 ( 112 ) B = 10 0 0 0 0 0 0 0 0 0 0 times: compile 0.012662s, execution 2.2e-05s, mpirank:0 CodeAlloc : nb ptr 3900, size :499344 mpirank: 0 ``` ---
**Author:** ![prj](https://avatars.discourse-cdn.com/v4/letter/p/ecae2f/32.png) [@prj](https://community.freefem.org/u/prj)\ **Post date:** [October 27, 2025, 8:20am UTC](https://community.freefem.org/t/zoom-discussion-session/2719/13 "2025-10-27T08:20:02Z")
New session this morning in 45 minutes.