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Personal web pages
Andre Assis Javier Cilleruelo Keith Conrad Antonio Córdoba Rafael Garcia-Molina Andrew Granville Jesús Guillera	Carlos Ivorra James S. Milne William Stein Andreas Strömbergsson Xavier Xarles Peter Woit Doron Zeilberger

Mathematical centers
MSRI IAS Rutgers Math Department Politècnica de Catalunya (Mat.)	Autònoma de Barcelona (Mat.) Autònoma de Barcelona (Mat. i Inf.) Complutense de Madrid (Mat.) ICMAT

Lecture notes
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Databases, repositories
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Science blogs
John Baez Emmanuel Kowalski Terence Tao La ciencia de la mula Francis Gaussianos	Not even wrong (P. Woit) The Spectrum of Riemannium Antonio Pérez Sanz Math Counterexamples Caminos aleatorios

Science videoblogs and podcasts
Numberphile Periodic videos Sixty symbols Minute Physics Arvin Ash Veritasium Mathologer Brian Keating PBS Space Time Science without the Gobbledygook Quantum Fracture	Dr. Becky ElectroBOOM Pretty much Physics Branch education Real Engineering Lesics Dr Physics A Ludic science Harvard Lecture Demonstrations Mathemaniac matem1nuto

Video lectures, meetings, seminars
MSRI Streaming video until 2004 IAS video lectures Théorie analytique des nombres IHES 2014 Experimental math (Rutgers) Analytic Number Theory MSRI 2017	Recent developments in Analytic Number Theory MSRI 2017 Columbia University (Math) Tobias Osborne channel Javier Garcia channel

Bizarre scientific questions
Human body in outer space Lightning strike usually nonlethal Celebratory gunfire Moon illusion Improbable research (Ig Nobel) What if	Landing on Jupiter Landing on Saturn The danger of falling objects Electrocution in water Pain and electric frequency

Programming and web development and design
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Online applications
Sage Cell Server Sage interactions Wolfram Alpha Magma calculator Audio youtube to MP3 Cut audio file Online converter Zamzar file conversion Detexify LaTeX symbol converter LaTeXML's Web Server	Tables generator pandoc online Timers Dictionary of real numbers Inverse symbolic calculator Speller and grammar checker DeepL Google translator Reverse image search Figlet Server Figlet Server 2

Miscellanea
LaTeX Templates Overleaf LaTeX Documentation Revista Pensamiento Matemático Cercanías Madrid ecartelera Madrid Fridrich Rubik cube page Dave Hax channel rtve Play tvguia short of the week Jamendo Photopin	Unsplash (photos) Endangered languages Románico digital Cheat sheets Malaprensa Alba learning Fundación Juan March Ramanujan's notebook 1 Ramanujan's notebook 2 Ramanujan's notebook 3 Science podcasts duckduckgo