The list of universities that have adopted Measure, Integration & Real Analysis as a textbook has just expanded to 100 entries. The complete list is available at If your university should be on this list but is not, please let me know (measure@axler.net).

The slides for the talk that I gave last week (Unlocking Hidden Dimensions: The Power of Generalized Eigenvectors) are now available at . #linearalgebra

The Fall semester is now ending at most universities. If you used the new fourth edition of Linear Algebra Done Right as a textbook this semester, please consider posting a review of the book on Amazon (.

The free Kindle version of the fourth edition of my book Linear Algebra Done Right is now available at The free pdf version of the book is available at The free translation into Chinese is also available as a pdf file at

The list of 86 universities that have used my book Measure, Integration & Real Analysis as a textbook is now available at #measuretheory #realanalysis #functionalanalysis

The electronic version of the translation into Chinese of my book Linear Algebra Done Right is now legally available without cost at #linearalgebra

The Spring semester is now ending at most universities. If you used the new fourth edition of Linear Algebra Done Right as a textbook this semester, please consider posting a review of the book on Amazon (.

If you will attend JMM in San Francisco this week, please consider coming to one of the talks that I will give:. The Marvelous Minimal Polynomial, Wednesday (January 3), 3:30 pm - 4 pm, 212 Moscone Center;. The Stupendous Singular Value Decomposition, Friday (January 5), 9:30 am

The electronic version of the new fourth edition of my book Linear Algebra Done Right has now been downloaded over 80 thousand times in the two months since it was released. The electronic version of this Open Access book is freely available at The print

The print version of the new fourth edition of my book Linear Algebra Done Right is now available at the links below. Amazon: . Springer: #linearalgebra

The print version of the new fourth edition of my book Linear Algebra Done Right is now available at this link on Amazon:.#linearalgebra

I am delighted to announce publication of the 4th edition of Linear Algebra Done Right as an Open Access book. The electronic version is legally free to the world at That website also has links to pre-order the print version of the book. #linearalgebra

The fourth edition of Linear Algebra Done Right is on schedule for publication in two months. The hardcover version can be pre-ordered at or at. For the electronic version, see in late November 2023.

RT @CavaliereGiu: Hi #EconTwitter!. Did you know you can teach 𝐥𝐢𝐧𝐞𝐚𝐫 𝐚𝐥𝐠𝐞𝐛𝐫𝐚 without mentioning 𝑑𝑒𝑡𝑒𝑟𝑚𝑖𝑛𝑎𝑛𝑡𝑠 until the end of the course?….

I am sorry to report that my wonderful cat Moon died suddenly from a blood clot on 5 August 2023. He was five years old. Moon provided the pun shown below that is on page 44 of my book Measure, Integration & Real Analysis.

A new subsection on the Gershgorin disk theorem was added yesterday to the forthcoming fourth edition of my book Linear Algebra Done Right. See pages 169-170 in Chapter 5, which is freely available at . #linearalgebra

The videos that accompany Linear Algebra Done Right have now been viewed for over three million minutes total. These videos are freely available at #linearalgebra

New version of Chapter 5 of forthcoming 4th edition of Linear Algebra Done Right is now freely available at Look at new proof (without determinants!) that every operator on an odd-dimensional real vector space has an eigenvalue (see 5.34). #linearalgebra

Chapter 7 (Operators on Inner Product Spaces) of the future fourth edition of my book Linear Algebra Done Right is now freely available at #LinearAlgebra

New version of Chapter 5 (Eigenvalues and Eigenvectors) of my book Linear Algebra Done Right is now freely available at Major change from previous version is simplification of proof that minimal polynomial of an operator on V has degree at most dim V.