#ProjectGutenberg

2025-07-03

Two books in French on complex analysis (residues, and elliptic functions) produced at #DistributedProofreaders for #ProjectGutenberg, with thoughts about what we choose to value and preserve, and the urgent weight our choices bear:
diffgeom.com/blogs/free-online
#Math

A computer-plotted line drawing of stereographic projection from one pole of a sphere onto the tangent plane at the antipode, and the reciprocal effect on a longitudinal section.
2025-07-02

Theory of Finite Groups by William Burnside, a 2012 digitization of the 1897 treatise produced at #DistributedProofreaders for #ProjectGutenberg in collaboration with Brenda Lewis and many other volunteers. Read more:
diffgeom.com/blogs/free-online
#Math

Figure 8 from Burnside, depicting a surface of genus 2 divided into light and dark topological triangles, illustrating an action by the quaternion group of order 8. Burnside's discussion of this example begins on page 307 (page 325 of the PDF file).
2025-07-01

Two books by Augustus De Morgan digitized for Project Gutenberg, one about algebra and geometry, the other about calculus. Their style is formal by today's standards, but each may be useful for self-study by students and teachers. Read more:
diffgeom.com/blogs/free-online
#Math #ITeachMath #ProjectGutenberg

Frontispiece of "On the Study and Difficulties of Mathematics": A full-face painted portrait of Augustus De Morgan, with "Copyright 1898. The Open Court Publishing Co." printed below, and a printed signature reading "Yours very truly, De Morgan."
2025-06-27

Some (relatively) light summer reading: Lectures on Elementary Mathematics by Joseph Louis Lagrange, digitized for Project Gutenberg in 2011. Read more:
diffgeom.com/blogs/free-online
#Math #ProjectGutenberg

The frontispiece of Lectures on Elementary Mathematics: A trompe l'oeil portrait of Lagrange in as if in a bas-relief oval frame.
2025-06-25

Two books on relativity by Arthur Eddington bookend my time digitizing for Project Gutenberg:
diffgeom.com/blogs/free-online

#Math #ProjectGutenberg #Physics

A 1923 photograph of (left to right) Albert Einstein, Arthur Eddington, Paul Ehrenfest, Hendrik Lorentz, and Willem de Sitter
2025-06-24

Among my earliest solo productions for Project Gutenberg are two books on relativity by Einstein, posted in May, 2011: diffgeom.com/blogs/free-online

An installment of Free Online Math Materials
diffgeom.com/blogs/free-online

#Math #Physics #ProjectGutenberg

The title page of Project Gutenberg's edition of The Meaning of Relativity by Albert Einstein:

The Meaning of Relativity
Four Lectures Delivered at
Princeton University, May, 1921
by
Albert Einstein

With four diagrams

Princeton
Princeton University Press
1923
2025-06-23

In the aughts of the 20th century, differential geometry was recognizably the subject students learn today. The Project Gutenberg ebook Leçons de Géométrie Supérieure by Ernest Vessiot, and a few words about the book's Content Provider:

diffgeom.com/blogs/free-online

#Math #Mathematics #ProjectGutenberg

Four gold curves against a twilit background depict the twisted cubic curve with a family of tangent lines, and three orthogonal projections to coordinate planes spatially oriented as shadows.
Doktor Overcomma :vepi:bobcromwell@dobbs.town
2025-06-22

Project Gutenberg is on a Finnish binge lately
gutenberg.org/ebooks/76350
#Finnish #ProjectGutenberg

2025-06-22

Two centuries ago (1825 and 1827), Gauss published two papers on intrinsic curvature of surfaces. In 2011, using page scans and OCR text generously provided by Brenda Lewis at Distributed Proofreaders, I digitized the English translation by Hiltebeitel and Morehead for Project Gutenberg.

This Very Short blog post introduces the geometric context (extrinsic and intrinsic curvature of surfaces) for non-mathematicians: diffgeom.com/blogs/free-online

#Math #MathArt #ProjectGutenberg

A sphere with three great circles delimiting a spherical triangle edged in blue, with regions shaded by a mesh of brick red, gold, and green lines, allowing the back of the sphere to show through.
2025-06-21

The 1914 British second edition of Calculus Made Easy is by far the most popular ebook I helped produce for Project Gutenberg: diffgeom.com/blogs/free-online

Part of my 2010 post for the Distributed Proofreaders blog about the book (full text: blog.pgdp.net/2010/10/13/calcu)
---(snip)---
The mathematical study of rates of change and total change, also known as “the differential and integral calculus”, has frightened generations of students. Ironically, this scholastic trauma is often unnecessary: Many formal rules of calculus are nearly trivial to carry out. The mathematical difficulties lie in understanding and using the rigorous logical framework of the calculus—what mathematicians nowadays term “elementary real analysis”—and in establishing the correctness of the formal manipulations and their connections with mathematical interpretations.

Sylvanus Phillips Thompson’s “Calculus Made Easy” gives cogent yet entertaining and irreverent explanations of these easy calculational rules. Justifications are conceptual, but beneficially simplified and intuitive. Popularized and later updated by the recreational mathematics author Martin Gardner, “Calculus Made Easy” has remained a widely-read introductory text for the past century.

[...]

If you’ve had unpleasant experiences with calculus, if your knowledge has grown rusty, or if you’ve simply never encountered this powerful and intriguing branch of mathematics, Thompson’s gem of a textbook should prove a pleasant, thought-provoking, and ultimately rewarding read.
---(snip)---
#Math #Mathematics #ProjectGutenberg

The title page of Project Gutenberg's edition of Calculus Made Easy by Sylvanus P. Thompson:
Calculus Made Easy:
Being a very-simplest introduction to
those beautiful methods of reckoning
which are generally called by the
terrifying names of the
Differential Calculus
and the
Integral Calculus
By
F. R. S.

Second Edition, Enlarged

Macmillan and Co., Limited
St. Martin's Street, London,
1914
2025-06-21

Over the years I've helped create a variety of free online resources for teaching and learning math, including textbook manuscripts, public domain ebooks, and interactive software. I've posted haphazardly at mathstodon about a few of these items, but am starting a line of Very Short blog posts at my online shop Differential Geometry to showcase examples more systematically.
diffgeom.com/blogs/free-online
#Math #ProjectGutenberg #Mathematics

Screenshot of the interactive truchet tile program "Phosphene" showing a symmetric gold-and-black pattern of polygons made from an 8x8 array of right isosceles triangles.
Kerrick Long (code)kerrick@dotnet.social
2025-06-14

Okay yeah but hear me out

Not all enterprise-level domain models have to be for an enterprise

#UML #SoftwareEngineering #Modeling #DomainModeling #Programming #Books #ProjectGutenberg #Copyright

A very large UML diagram illustrating a complex domain model for Project Gutenberg copyright clearance research
readbeanicecreamreadbeanicecream
2025-06-09

@Gustodon I mean... I have a list for just such an occasion!

Shelters, Shacks and Shanties gutenberg.org/ebooks/28255

Scouting for Boys by Baden-Powell of Gilwell gutenberg.org/ebooks/65993

Boy Scouts Handbook by Boy Scouts of America. gutenberg.org/ebooks/29558

The Home Medical Library, Volume 1 gutenberg.org/ebooks/27943

Camping and camp cooking
gutenberg.org/ebooks/73671

Stewart V. Wrightsvw@fosstodon.org
2025-06-08

If you're not following @gutenberg_org you are missing out.

A wonderful source of everything from #cryptography through #art, #feminism to the #philosophy of #physics and a whole lot more I can't make vaguely alliterate.

#ProjectGutenberg - free #ebooks

2025-06-06

on Star Trek, they didn't often think through the consequences of the treknology, but the Federation's post-capitalist society is a natural consequence of transporters and replicators. it's an idea that was explored by several sf authors of the era, like George O. Smith in "Pandora's Millions." #StarTrek #ScienceFiction #PostCapitalism #ShortStory #ProjectGutenberg #Ebook

Pandora's Millions by George O. Smith | Project Gutenberg

gutenberg.org/ebooks/68004

Bibliolater 📚 📜 🖋bibliolater@qoto.org
2025-06-05

📖 **The Foundations of Geometry by David Hilbert**

“_Read or download for free_”

🔗 gutenberg.org/ebooks/17384.

#ProjectGutenberg #Read #Download #Ebook #Bookstodon #Maths #Mathematics #Math #Geometry @bookstodon

2025-05-24

I shared the userstyle I was creating for Project Gutenberg's online ebook reader.

As of now, the userstyle:
- comes with light and dark modes;
- let's you change the default font size;
- allows you to switch between the browser's serif font and one from google fonts.

Feel free to report any issues on any of these forges:
- :codeberg: codeberg.org/brunomiguel/guten
- :github: github.com/brunomiguel/gutenbe

#OpenSource #ProjectGutenberg #FOSS

Client Info

Server: https://mastodon.social
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