oh, man! @Wolfram just sent me a 60 free subscription to #Mathematica .. now i’m just gonna get all addicted..
oh, man! @Wolfram just sent me a 60 free subscription to #Mathematica .. now i’m just gonna get all addicted..
Гироскоп в презентации или зачем брать с собой JoyCon на большую научную конференцию
Анимации и свистоперделки в том виде, в котором они были популярны с PowerPoint 10 или 20 лет назад, значительно отступили на второй план. Любые технические доклады сейчас - это зачастую просто PDF документ. А хотелось бы больше Как? Зачем превращать буханку хлеба в космический корабль? И при чем тут физика и webdev? Давайте разбираться! (осторожно! трафик)
Dear scientists of mastodon, I am once again asking for assistance
I want to evaluate:
F(\omega',\omega)=\int_{-\infty}^{\infty}f(t,\omega)e^{i(\omega-\omega')t}dt
For easy cases, frequency shifting property of Fourier transform will be enough. If f(t,omega)=a, the result will be 2*pi*a*delta(omega-omega').
I've tried to solve this in Matlab, but I lack of any confidence on this matter (script on alt-text).
How would you implement this? Thank you
Hola! Cientifiques de Mastodon, especialmente si usáis Matlab, Mathematica, o Python. Estoy atascado con un problema ¿Podríais echarme un cable?
He obtenido una expresión analítica general que bajo casos puntuales soy capaz de "resolverla a mano", pero en otros casos las integrales no tienen solución analítica.
\int_{-\infty}^{t}dt'e^{\int_{t}^{t'}ds \gamma(s)}e^{-i\omega(t'-t)}
¿Cómo lo implementaríais en un script de integración numérico? Gracias
The following equations use each of the digits \(1\) to \(9\) exactly once.
\[\Huge\boxed{567=\sqrt{321489}}\]
\[\Huge\boxed{854=\sqrt{729316}}\]
In fact, there are only \(2\) solutions to \(n=\sqrt N\) or \(n^2=N\), with the condition that \(n\) and \(N\) together use each of the digits \(1\) to \(9\) exactly once. See what #Mathematica and #Python return. Also, \(n^k=N\) seems to have no solutions for \(k\neq2\).
Python code:
[1] https://www.mycompiler.io/view/GEAYSh5dYeG
[2] https://sagecell.sagemath.org/?z=eJyFUduKwjAQfS_0HwZfkrhFUNdbwV_oD4iU7iaVWeykJHFfxH_fTLVeirDzcAiZM5dzpna2AQzGBWuPHrBprQvQGtecQhXQkk-TNNGmBvTlb3VEXXp7PHFGUgaFytMEYnzb5gvJ6FLjAYOHLfjgJCn46B6FutKcCSdH4OMQo-WgSMF2CzsxFRmIGcOc4ZNhwbBkWDGsGTZi3-9WIz328rJf6v4T19ntr3-1dZ08QHqRKcV0Nv9cLFfrjejrez4y2VV0MHKawUblAA8CB5VRZBwixOTHIkluvMtxr15pxTsa5kMaRQpSkF3XYYtbrniTwzqWjscwYx8LqEj_c7TnuHs1qdrWkJZX5vBuNxIb_-zu8ABpwr5xB7bunrjNbR1LqEcs9EyXrFN1Li4j9QdHwLWv&lang=python&interacts=eJyLjgUAARUAuQ==
[Перевод] Моделируем поверхность Земли в пару строчек
Вы когда-нибудь играли в Outer Wilds ? Планеты там невероятно красивы. Это собственно стало основной мотивацией создать свою простую модель планеты, используя реальные географические данные о высотах и немножко магии Wolfram Language
Released into the #PublicDomain and uploaded on #WikimediaCommons together with the #Mathematica script used to generate it: https://commons.wikimedia.org/wiki/File:Epicycles.gif
This is what people mean when they talk about "readable code," right?
(This is in fact a valid—and useful—line of #Mathematica code…)
My #introduction in #English seems to have been lost in moving instances, so here's a fast-drawn new one in hashtags:
#science #physics
since 2021 working on
#fiberlinks #frequency #time #transfer #reference #quantum #metrology
before that on
#biophysics #raman #spectroscopy #microscopy #biofilm #bacteria #protein #microplastics
#programming
#python (#fortran #mathematica )
Other interests:
#plants #cats #sciencefiction #fantasy #reading #writing #audiobooks
IMHO one of the prime reasons that most code found in academic (and perhaps corporate?) settings suck is because we don't teach people to use functional programming constructs. I have observed this in #perl, #rstats, #Mathematica & even #C (assuming you take care with pointers).
IMHO One of the prime reasons that most code found in academic (and perhaps corporate?) settings suck is because we don't teach people to use functional programming constructs. I have observed this in #perl, #rstats, #Mathematica & even #C (assuming you take care with pointers).
IMHO One of the prime reasons that most code found in academic (and perhaps corporate?) settings suck is because we don't teach people to use functional programming constructs. I have observed this in #perl, #rstats, #Mathematica & even #C (assuming you take care with pointers).
Blogged about math packages a bit.
Released into the #PublicDomain and uploaded to #WikimediaCommons together with the #Mathematica script used to generate it: https://commons.wikimedia.org/wiki/File:Ashcroft-diffraction.webm
在Typescript中的一個Mathematica解譯器 - Slava Akhmechet
➤ Mathematica解譯器的建立過程
✤ https://www.spakhm.com/ts-wolfram
在Typescript中嘗試Mathematica解譯器,包括實現象徵微分運算子的數學規則,以及建立一個足夠正確運行自訂微分碼的解譯器。作者描述了實現過程中遇到的問題和解決方法,並測試瞭解譯器在不同數學公式上的正確性。
+ 這篇文章詳細描述了在Typescript中建立Mathematica解譯器的過程,很有趣且具有教育意義。
+ 這個專案展示了作者對於解決數學問題和處理程式碼的熱情和耐心,對於學習如何處理符號推導的過程很有幫助。
#解譯器 #Mathematica #Typescript
LotItBit или как я создал криптолотерею и все потерял
LotItBit или как я создал криптолотерею и потерял все . Эта история будет интересна и как любопытный технический проект, и как пример того, насколько внутренние убеждения участников важны и могут влиять на результаты работы и жизнеспособность продуктов. Идея выразить в тексте этот опыт просилась на свет уже давно и в свете наступления очередной волны интереса к криптопроектам, я решил сделать из этого своеобразный творческий эксперимент. Так что не судите строго и приятного чтения.
Watching a ton of #Godot tutorials made me realize that I will never be able to make a game (and gave me a new level of respect for those who are able to). But it also made me realize that I would really like to go back to making "Create scientific animations with #Mathematica" videos.
If only I had the mental space...
Released into the #PublicDomain and uploaded to #WikimediaCommons, together with the #Mathematica script used to generate it: https://commons.wikimedia.org/wiki/File:Temporal_coherence_tutorial.webm