نوشتجات ریاضی، فیزیک و کیهانشناسی

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Cosmology	کیهانشناسی
Mathematics	ریاضیات

Mathematics Sources:

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Wolfram Mathworld
NIST Digital Library of Mathematical Functions
Mathematics Stack Exchange
S.O.S. MATHematics
Encyclopedia of Mathematics
Paul's Online Math Notes
Events on European Mathematics Society
IMU (International Mathematical Union)
Cut The Knot
Department of Mathematics and Computer Science of EMORY





Mathematical Onlines:

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Desmos Calculator Example 1
Desmos Calculator Example 2
Integral Calculator
Symbolab: Indefinite Integral Calculator
WolframAlpha
keisan Online Calculator
MAA (Mathematical Association of America)
MAA Convergence
Leibnitiana
MIT Open Course Ware


Books and Papers Sites:

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Genesis (libgen)
BookSC
Z-Library
arXiv
Textbooks in Mathematics
Free Textbooks in Mathematics
FreeBookCentre.net
Internet Archive
AMS
Booksee
E-Books Directory
PaperHub
JournalTOCs
Bookyards
Bookboon
doab
Ketabnak
Islamic Books
Centre for the Great Islamic Encyclopaedia


Useful links:

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Detexify LaTeX
isaac Physics
Physics at StackExchange
Scholarpedia
Ganjoor (Iranian poets)