Computer Science @CompSciFact
Daily tweets about computer science and related stuff @JohnDCook. JohnDCook.com Joined November 2010-
Tweets13K
-
Followers251K
-
Following19
-
Likes266
Visualizing software development effort johndcook.com/blog/2008/07/2…
1
0
12
3K
2
'Fancy algorithms are slow when n is small, and n is usually small.' -- Rob Pike
'As soon as an Analytical Engine exists, it will necessarily guide the future course of science.' -- Charles Babbage
Curry–Howard correspondence between programs and proofs en.wikipedia.org/wiki/Curry%E2%…
Increasing generality of languages: regular < context-free < context-sensitive < recursively enumerable
A distributed system is one in which the failure of a computer you didn't even know existed can render your own computer unusable. - Lamport
Hellman, Diffie, and Merkle demonstrated public key cryptography in 1976.
Measuring cryptographic strength in liters of boiling water johndcook.com/blog/2025/09/0…
'If you lie to the compiler, it will get its revenge.' -- Henry Spencer
Interpolating rotations with the SLERP algorithm johndcook.com/blog/2023/03/1…
Bubble sort requires O(n²) comparisons both in the worst case and in the average case.
Why haven't quantum computers factored 21 yet? algassert.com/post/2500
El Salvador’s Bitcoin and Quantum Computing johndcook.com/blog/2025/08/3…
Dozens of definitions of complexity: web.mit.edu/esd.83/www/not… [pdf]
A function is partially correct if it never returns a wrong answer, though it might not return at all.
What is the maximum data size that you can store on paper and reliably retrieve? By @OndrejCertik johndcook.com/blog/2024/03/0…
'The P vs NP problem was first mentioned in 1956 in a letter from Kurt Gödel to John von Neumann.' -- Lance Fortnow
It would seem that matrix multiplication is a trivial task. But when you have gargantuan matrices spread out over a farm of GPUs, doing it most efficiently is absolutely not trivial.
It would seem that matrix multiplication is a trivial task. But when you have gargantuan matrices spread out over a farm of GPUs, doing it most efficiently is absolutely not trivial.
Algebra Etc. @AlgebraFact
194K Followers 19 Following Tweets about algebra, number theory, and miscellaneous math by @JohnDCook.
Analysis Fact @AnalysisFact
133K Followers 19 Following Daily tweets about real and complex analysis and related topics. From @JohnDCook.
Data Science Fact @DataSciFact
195K Followers 19 Following Daily data science tweets from @JohnDCook.
Unix tool tip @UnixToolTip
84K Followers 19 Following Tips on Unix utilities and related topics from @JohnDCook.
Scientific Python @SciPyTip
209K Followers 18 Following Tweets about SciPy (Scientific Python) and related topics from @JohnDCook.
Signal Processing @DSP_fact
34K Followers 18 Following Digital signal processing, acoustics, Fourier analysis, etc.
Topology Fact @TopologyFact
74K Followers 19 Following Tweets on topology and geometry from @JohnDCook.
Differential Eqns @diff_eq
75K Followers 17 Following Tweets on ordinary and partial differential equations from @JohnDCook
Logic & Applications @LogicPractice
27K Followers 8 Following Logic and applications of logic from @JohnDCook
Command Line Magic @climagic
190K Followers 11K Following Cool Unix/Linux Command Line tricks you can use in $TWITTER_CHAR_LIMIT characters or less. Here mostly to inspire. Also on https://t.co/YYJE9JpVnF
Frank Nielsen @FrnkNlsn
36K Followers 2K Following Information Geometry, Information Theory, and Geometric Science of Information (GSI) for machine learning and AI, visual computing, HPC, pyBregMan lib @SonyCSL
MathType @MathType
46K Followers 280 Following Type and handwrite mathematical notation. Easily include quality math equations in your documents and digital content. Part of @wiris_science.
Programming Wisdom @CodeWisdom
270K Followers 2K Following Programming wisdom and quotes throughout the years. The Knuth, the whole Knuth, and nothing but the Knuth, so help me Codd.
TeX and Typography @TeXtip
51K Followers 19 Following Tweets on TeX, LaTeX, and typography. @JohnDCook.
Meeting C++ @meetingcpp
34K Followers 967 Following C++ News - C++ User Groups - C++ Conference #cpp https://t.co/qpnlCJHbWj / @[email protected] Imprint: Jens Weller, https://t.co/UI8y5b7GsQ
Regular Expression @RegexTip
75K Followers 19 Following Learn to use regular expressions by following RegexTip. From @JohnDCook.
Science and Medicine @ScienceTip
42K Followers 19 Following Daily post on science and medicine from @JohnDCook
Functor Fact @FunctorFact
26K Followers 6 Following Functional programming and category theory tweets from @JohnDCook
Imran Khan @ImranKh82269711
7 Followers 310 Following
Ariel Lenis @ArielLenisDv
3 Followers 142 Following
☯ @1ts23
4 Followers 19 Following
Abdikani Muhumed @Abdikani83
152 Followers 677 Following Health & Wellness Enthusiast,🥗 Daily Motivation💪 & World History.🌍
Kanha Pradhan @Kanha__pradhan
6 Followers 109 Following Odia from Angul 🌾 | Geopolitics enthusiast 🌍 | Finance enthusiast 📈 | Aspiring entrepreneur 🚀 | Passionate traveler ✈️
Rollercoaster @Pro01G
0 Followers 17 Following
Proph Dev 🇬🇩 @ProphDev
103 Followers 853 Following Revivalist| Preacher| Prophet| Psalmist| Conservative| Analyst| Chess player| Poet| Holy Rock Artiste| https://t.co/HPldoUDnBZ
AntonyB @anton_barantiev
8 Followers 156 Following
Ojas Sharma @ojas_s2006
0 Followers 4 Following
Parth Patel @ParthPatel28618
2 Followers 18 Following
Dr.Noémie Valois @Dr_Enyu
59 Followers 12 Following Probes AI, physics, and philosophy. Entrepreneur & educator weaving knowledge into innovation. Tweets on tech, science, and society with precision.
han . @han297364957288
0 Followers 30 Following
Md. Saleh Ibtasham @MdIbtasham
1 Followers 81 Following
Ahmad Hamza @MyWorld171187
2 Followers 18 Following I am available for work and open to being hired as a supportive team member or helper (working boi) on projects. IT. #Wannabe Mu'min🙏 Mars man nuked d other ac
TOUGMA Wahabou @TougmaWaha14191
2 Followers 11 Following
Schyler Chartley @SchylerChartley
0 Followers 18 Following Tech Machine learning Cloud engineer Cyberspace Cyber security analyst Web developer
GUDDU KUMAR @GUDDUKUMAR2403
0 Followers 20 Following
Safi Baloch @safikhan_804
1 Followers 13 Following
Tanav ✦ @tanavtwt
132 Followers 512 Following Learning new skills. Perplexity Campus Partner https://t.co/m2mvlnLR6u https://t.co/yhWNrlQQBt
Bijesh @kcbijesh
20 Followers 218 Following
David Odin @DavidDindinX
584 Followers 478 Following Uniquement là pour parler de JV. Et encore ! Ma culture n'est pas si grande que ça. Les maths m'intéressent aussi.
troat @_troat
139 Followers 154 Following
Aman ChaudharY @AmaNChaudh3454
0 Followers 28 Following Diving into the world of cybersecurity | Exploring OS, networking, Python & threat hunting | Always learning, always curious
Samira @SamiraMiah4
115 Followers 2K Following @manutd ❤️ ❤️❤️❤️❤️❤️❤️ Pokémon lover ❤️❤️❤️hated adored never ignored ❤️❤️❤️ born a red
Usama Khan @Usamaakhan_10
21 Followers 297 Following وَلَا تَكُونُوا كَالَّذِينَ نَسُوا اللَّهَ فَأَنسَاهُمْ أَنفُسَهُمْ
Muhammad Y Abbas @abbas_y74576
4 Followers 51 Following
EVANS NTABO @EVANSNTABO3
54 Followers 727 Following
WiseCheerfulDog @b_bnasro
0 Followers 5 Following
Jaqub Samani @SamaniJaqub
0 Followers 44 Following
Daniel Ombok @OmbokDaniel
51 Followers 831 Following I broadminded entrepreneur and senior mathematician whose ambition is always high
niffler @Jiuyue09
4 Followers 174 Following
Ahmet @Ahmet84_
0 Followers 4K Following
Aldo Ceccarelli @aldoceccarelli
16K Followers 17K Following Al @SalonedelLibro con “Sai che ti dico?” https://t.co/qMopC2VuHE
Κύκλος Κυρι... @KyklosK64676
10 Followers 95 Following
Aakrosh singh @singhmukesh21
53 Followers 147 Following
Algebra Etc. @AlgebraFact
194K Followers 19 Following Tweets about algebra, number theory, and miscellaneous math by @JohnDCook.
Analysis Fact @AnalysisFact
133K Followers 19 Following Daily tweets about real and complex analysis and related topics. From @JohnDCook.
Data Science Fact @DataSciFact
195K Followers 19 Following Daily data science tweets from @JohnDCook.
Unix tool tip @UnixToolTip
84K Followers 19 Following Tips on Unix utilities and related topics from @JohnDCook.
Scientific Python @SciPyTip
209K Followers 18 Following Tweets about SciPy (Scientific Python) and related topics from @JohnDCook.
Signal Processing @DSP_fact
34K Followers 18 Following Digital signal processing, acoustics, Fourier analysis, etc.
Topology Fact @TopologyFact
74K Followers 19 Following Tweets on topology and geometry from @JohnDCook.
Differential Eqns @diff_eq
75K Followers 17 Following Tweets on ordinary and partial differential equations from @JohnDCook
Logic & Applications @LogicPractice
27K Followers 8 Following Logic and applications of logic from @JohnDCook
TeX and Typography @TeXtip
51K Followers 19 Following Tweets on TeX, LaTeX, and typography. @JohnDCook.
Regular Expression @RegexTip
75K Followers 19 Following Learn to use regular expressions by following RegexTip. From @JohnDCook.
Science and Medicine @ScienceTip
42K Followers 19 Following Daily post on science and medicine from @JohnDCook
Functor Fact @FunctorFact
26K Followers 6 Following Functional programming and category theory tweets from @JohnDCook
Units @UnitFact
25K Followers 17 Following Units of measurement, constants, dimensional analysis, etc. From @JohnDCook
Medical Vocabulary @MedVocab
52K Followers 19 Following Learn medical vocabulary a little bit at a time. From @JohnDCook.
Network Fact @NetworkFact
47K Followers 19 Following Daily tweets about networks, graph theory, and related topics from @JohnDCookTrends for United States
84,2 B posts
77,2 B posts
201 B posts
57,6 B posts
251 B posts
68,4 B posts
198 B posts
25,1 B posts
4.076 posts
41,9 B posts
56,6 B posts
5.742 posts
8.183 posts
4.362 posts
5.389 posts
119 B posts
5.587 posts
3.753 posts
You might like
Probability Fact
@ProbFact
147K Followers
Algebra Etc.
@AlgebraFact
194K Followers
Data Science Fact
@DataSciFact
195K Followers
Analysis Fact
@AnalysisFact
133K Followers
GitHub
@github
2.6M Followers
Scientific Python
@SciPyTip
209K Followers
Logic & Applications
@LogicPractice
27K Followers
Differential Eqns
@diff_eq
75K Followers
Topology Fact
@TopologyFact
74K Followers
Brendan Gregg
@brendangregg
47K Followers
Programming Wisdom
@CodeWisdom
270K Followers
Maths History
@mathshistory
109K Followers
Science and Medicine
@ScienceTip
42K Followers
Unix tool tip
@UnixToolTip
84K Followers
Kaggle
@kaggle
305K Followers