Analysis Fact @AnalysisFact
Daily tweets about real and complex analysis and related topics. From @JohnDCook. JohnDCook.com/math Joined December 2009-
Tweets11K
-
Followers125K
-
Following19
-
Likes134
All finite dimensional linear operators are continuous.
Well, waddya know -- looks like a NEW VIDEO! youtube.com/watch?v=5RHSS-…
Well, waddya know -- looks like a NEW VIDEO! youtube.com/watch?v=5RHSS-… https://t.co/G3eCn7qgRu
How faithful can a map be? Quantifying and minimizing distortion. johndcook.com/blog/2023/05/1…
A linear operator is continuous if and only if it maps the unit ball to a bounded set.
Fatou's lemma: the integral of the lim inf is at most the lim inf of the integrals. en.wikipedia.org/wiki/Fatou%27s…
Diagram of relationships between kinds of topological vector space johndcook.com/blog/topologic…
Stoke's theorem: The integral of curl F over a surface equals the integral of F around the boundary of that surface.
Summation by parts is the discrete analog to integration by parts. en.wikipedia.org/wiki/Summation…
Oldies but goldies: I Daubechies, Orthonormal bases of compactly supported wavelets, 1988. Defines orthogonal wavelet bases which generalize the Haar basis. The construction is a mathematical gem that uses the Bezout theorem. fr.wikipedia.org/wiki/Ingrid_Da…
Fixed points of the Fourier transform johndcook.com/blog/2023/03/1…
Octave means johndcook.com/blog/2023/10/1…
New post: Arc length of a general Archimedean spiral johndcook.com/blog/2024/04/1…
'Real analysts cannot do without Fourier, complex analysts cannot do without Laurent, and numerical analysts cannot do without Chebyshev.' -- Lloyd N. Trefethen
How well does an interpolating spline fit a function? johndcook.com/blog/2023/02/1…
Hohmann transfer orbit johndcook.com/blog/2020/06/1…
Algebra Etc. @AlgebraFact
185K Followers 19 Following Tweets about algebra, number theory, and miscellaneous math by @JohnDCook.
Quanta Magazine @QuantaMagazine
323K Followers 657 Following Illuminating math and science. Supported by @SimonsFdn. 2022 Pulitzer Prize in Explanatory Reporting.
Jay Cummings @LongFormMath
36K Followers 670 Following Math prof @SacState. Author of long-form textbooks on proofs (https://t.co/YqXnxDmOe0) & real analysis (https://t.co/3IGQ6BIx5Z). Math History book in late 2024
the finite physicist @FinitePhysicist
61K Followers 380 Following theoretical particle physics & phenomenology || don't sleep through dreams that can come true
Steven Strogatz @stevenstrogatz
157K Followers 3K Following Mathematician, writer, Cornell professor. All cards on the table, face up, all the time.
Martin Bauer @martinmbauer
65K Followers 1K Following Working on particle physics, quantum sensors, dark matter. Associate Prof at @IPPP_Durham @durham_uni, FLF @UKRI_News, Science board member @STFC_Matters
Topology Fact @TopologyFact
72K Followers 19 Following Tweets on topology and geometry from @JohnDCook.
Differential Eqns @diff_eq
72K Followers 17 Following Tweets on ordinary and partial differential equations from @JohnDCook
Data Science Fact @DataSciFact
191K Followers 19 Following Daily data science tweets from @JohnDCook.
MathType @MathType
40K Followers 303 Following Type and handwrite mathematical notation. Easily include quality math equations in your documents and digital content. Part of @wiris_science.
Computer Science @CompSciFact
249K Followers 19 Following Daily tweets about computer science and related stuff @JohnDCook.
Matt Henderson @matthen2
79K Followers 2K Following maths, visualisations, conversational AI. currently @RekaAILabs - previously: @Apple AI/ML, @PolyAI, @GoogleAI, MSc @EdinburghUni, PhD @Cambridge_Eng
John D. Cook @JohnDCook
52K Followers 208 Following I turn business problems into math problems then solve them.
Frank Nielsen @FrnkNlsn
23K Followers 1K Following Machine Learning & AI, Information Sciences & Information Geometry, Distances & Statistical models, HPC. "Geometry defines the architecture of spaces" @SonyCSL
Sam Walters ☕️ @SamuelGWalters
13K Followers 512 Following 🇨🇦 Math prof. Former Chair of Math-Stat Dept at the University of Northern B.C. (Mar 2016 - Jun 2020). Christian.
Signal Processing @DSP_fact
32K Followers 18 Following Digital signal processing, acoustics, Fourier analysis, etc.
Scientific Python @SciPyTip
202K Followers 18 Following Tweets about SciPy (Scientific Python) and related topics from @JohnDCook.
Sudharsan Viswa @sudharsanviswa_
14 Followers 108 Following
Andrés Gómez @AndresGidh
2 Followers 62 Following
David R de Rapero @davidrg84_
329 Followers 381 Following Soy un médico sin bisturí 😎 ☔☀️El buen hombre del tiempo⚡🌈
Γιώργος Δρε.. @giwrgosdrt
4 Followers 216 Following
Zoro @ZoroPhp
1 Followers 59 Following
Shanxing Wang @forehandloop
592 Followers 3K Following Poet. Chinese lost in NYC. Public service/interest/space. He/him/his. Book project: Towards Apparent Event Horizon
Shashank Singh @mistershashanks
3 Followers 264 Following
helene blignaut @He16944Helene
0 Followers 23 Following
Silly_Willy_G @SillyWillyG1
85 Followers 171 Following
jaim @jaimsniechowski
101 Followers 243 Following
aarish babu @aarish2520
1 Followers 4 Following
choco3331 @choco333131
0 Followers 5 Following
Tsaqif Ahmad @TsaqifAhmad06
1 Followers 73 Following
van norman @vannorman235
63 Followers 1K Following
Mher Petrosyan @MherPetrosyan11
22 Followers 97 Following
CHIẾN VŨ ĐỨC @uc_vu9432
3 Followers 100 Following
xavier @xavier258021712
0 Followers 6 Following
Pentagon @Michaeldeo5
41 Followers 493 Following
Kim Mu Young @yb_muyoung
55 Followers 282 Following PhD candidate at Centre for Quantum Technologies (CQT). Currently working on continuous variable quantum computing in trapped ion systems.
Botond Horkovics @botihk
46 Followers 203 Following
Kc Garden @Gaardenn
33 Followers 721 Following
유디나 @sdnight5
49 Followers 97 Following No team. / 10년생 / 리겜러 / 서울특별시 성북구 거주하고, 대치동에 박힘 / 츄마이, 사볼,프세카 등등... / 스승님 : @toymanhwa
Options trader @Optionstra87227
0 Followers 66 Following
🐺🌕 @rourorourou21
2K Followers 4K Following
Karkouri Abdsamad @Abdoer777
27 Followers 58 Following
David G @DavidG10033
1 Followers 15 Following
Nadim Ud Doula @nadimuddoula
20 Followers 157 Following
Fabian @FrostyPath
26 Followers 457 Following - "Lawrence, what would you do if you had a million dollars?" - "I'll tell you what I'd do, man: two chicks at the same time, man."
鄭宗弘 @TsongHongTenn
2 Followers 28 Following
Matheus Carvalho @matfillype21
8 Followers 525 Following
chisato @chii__k
67 Followers 237 Following
Algebra Etc. @AlgebraFact
185K Followers 19 Following Tweets about algebra, number theory, and miscellaneous math by @JohnDCook.
Topology Fact @TopologyFact
72K Followers 19 Following Tweets on topology and geometry from @JohnDCook.
Differential Eqns @diff_eq
72K Followers 17 Following Tweets on ordinary and partial differential equations from @JohnDCook
Data Science Fact @DataSciFact
191K Followers 19 Following Daily data science tweets from @JohnDCook.
Computer Science @CompSciFact
249K Followers 19 Following Daily tweets about computer science and related stuff @JohnDCook.
John D. Cook @JohnDCook
52K Followers 208 Following I turn business problems into math problems then solve them.
Signal Processing @DSP_fact
32K Followers 18 Following Digital signal processing, acoustics, Fourier analysis, etc.
Scientific Python @SciPyTip
202K Followers 18 Following Tweets about SciPy (Scientific Python) and related topics from @JohnDCook.
Logic & Applications @LogicPractice
25K Followers 8 Following Logic and applications of logic from @JohnDCook
TeX and Typography @TeXtip
52K Followers 19 Following Tweets on TeX, LaTeX, and typography. @JohnDCook.
Unix tool tip @UnixToolTip
87K Followers 19 Following Tips on Unix utilities and related topics from @JohnDCook.
Network Fact @NetworkFact
47K Followers 19 Following Daily tweets about networks, graph theory, and related topics from @JohnDCook
Functor Fact @FunctorFact
26K Followers 6 Following Functional programming and category theory tweets from @JohnDCook
Medical Vocabulary @MedVocab
53K Followers 19 Following Learn medical vocabulary a little bit at a time. From @JohnDCook.
Units @UnitFact
26K Followers 17 Following Units of measurement, constants, dimensional analysis, etc. From @JohnDCook
Regular Expression @RegexTip
79K Followers 19 Following Learn to use regular expressions by following RegexTip. From @JohnDCook.
@AnalysisFact M and Q are related to the mass and electric charge of the black hole.
@AnalysisFact Curiously, this structure appears in the roots of the Reissner-Nordstrom radial function:
@AlgebraFact @JohnDCook That was interesting. Thank you.
@AnalysisFact Reminds me of x.com/normonics/stat…
Things you only notice when you tinker: Fully connected networks with nodes arranged regularly on a circle Evens have filled centers, odds have empty centers
@LorenzoWVilla it's obvious a priori after youve seen it from tinkering
@AnalysisFact This is why people invented differential forms instead of tensors. I mean, why let tensors confuse you with their coordinate systems, when you can instead be confused in all possible coordinate systems at once?
@AnalysisFact Thanks for making my head hurt first thing in the morning today
@AnalysisFact Beware, there's a mistake: there's no 1/n in the right hand side!
Oldies but goldies: W. Fenchel, On conjugate convex functions, 1949. The Legendre-Fenchel transform extends the Legendre transform to arbitrary dimensions. |x|^2/2 is the only fixed point of the transform. en.wikipedia.org/wiki/Legendre_…
Several decibel values are near integers. How does base 10 compare to other bases? johndcook.com/blog/2022/08/1…
Asked to integrate the impossible integral, with passing reference to Man of La Mancha. Another interesting post by John Cook, @AnalysisFact
To integrate the impossible integral johndcook.com/blog/2020/05/1…
@AnalysisFact Grats! It’s a pleasure to follow and read the content you provide here ;)
@AnalysisFact I was always wondering how to find the branch it belongs to, like especially when using Newton’s method to approximate after solving where there is no context given
@AnalysisFact Surely then, it is a reference to the term from chemistry
@AnalysisFact Important: You need also continuity of the function! @JohnDCook arxiv.org/abs/1702.04877
@AnalysisFact Doesn’t this definition also give the alternative formulation that like 0!! is sqrt(2/π)?
Trends for United States
You might like
