Observations Jul 2021

Leaving a step out of a routine inevitably lengthens the routine.

No matter what else, it all boils down to the competence and motivation of the people doing the work.

Mathematics -- a Few of the Very Best


Of all the books that I’ve ever read — the best.

Author: Herbert S. Wilf
Department of Mathematics
University of Pennsylvania
Philadelphia, Pennsylvania
Copyright 1990 and 1994 by Academic Press, Inc.

Authors: Marko Petkovŝek, Herbert S. Wilf, Doron Zeilberger
Marko Petkovŝek, University of Ljubljana, Ljubljana, Slovenia
Herbert S. Wilf, University of Pennsylvania, Philadelphia, PA, USA
Doron Zeilberger, Temple University, Philadelphia, PA, USA
April 27, 1997

Concrete Mathematics: A Foundation for Computer Science
Authors: Ronald L. Graham, Donald E. Knuth, Oren Patashnik
January 1994
Addison-Wesley Longman Publishing Co, Inc

Visual Complex Analysis
Author: Tristan Needham
Oxford University Press

https://www.cs.purdue.edu/homes/dgleich/publications/Gleich 2005 – finite calculus.pdf
Finite Calculus: A Tutorial for Solving Nasty Sums
Author: David Gleich
January 17, 2005

The Trachtenberg Speed System of Basic Mathematics
Author: Jakow Trachtenberg, Translated and Adapted by Ann Cutler and Rudolph McShane
Doubleday & Company, 1960


Do your best work,
Revisit next morning and edit out errors,
Revisit next week and edit out errors,
Revisit and run several arbitrary (though maybe realistic) test cases, edit out errors.


Web Lectures -- a Few of the Very Best
Brilliant Series

Imagine — in the 2020s, we can have Brian Greene as our private physics tutor.

A wonderful gift!

Thank you, Dr. Greene.KLH

Episode 01: Brian Greene kicks off YourDailyEquation with Albert Einstein’s famous equation E = mc2

Your Daily Equation #1: E = mc2



3Blue1Brown is a math YouTube channel created by Grant Sanderson. The channel focuses on teaching higher mathematics from a visual perspective, and on the process of discovery and inquiry-based learning in mathematics, which Sanderson calls “inventing math”.
Three Blue One Brown Feb 2019 (a previous post)

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