Showing posts with label mathematician. Show all posts
Showing posts with label mathematician. Show all posts

2023-11-25

4-2023 What is ISBN ? How does it work ?

Have you ever noticed on the back cover of every book is a barcoded pattern with some numbers ? Ever wondered what could that possibly mean ? According to wikipedia "The International Standard Book Number (ISBN) is a numeric commercial book identifier that is intended to be unique. Publishers purchase or receive ISBNs from an affiliate of the International ISBN Agency. " It helps librarians and bookstores keep track of books in their custody. The bar code replaces the ISBN for automated inventory control.

The ISBN is structured as in the digram given on the right:


Recently, my new book on Ramanujan got an ISBN: 978-1-5457-5712-3 (shown in the image below).
Also see:: How do barcodes work in the book publishing industry ?

2021-09-28

2-2021 This may happen to you, if you are a mathematician taking a flight !

Why should mathematicians avoid flying ?

This may happen to you too .....

Flight attendant: Is there a doctor on board?
Me: Yes, but I'm not that kind of…
Flight attendant: The pilots are arguing about whether there are as many irrational numbers as rational numbers.
Me: Okay. I’m here.

(Based on a Tweet by @LongFormMath, Jay Cummings, 2021-09-28)

2021-09-10

1-2021 The mathematician who was a tramp

Paul Erdos PGOM, LD, AD,LD, CD

Paul Erdos was a brilliant hungarian mathematician. He was known both for his social practice of mathematics (he engaged more than 500 collaborators) and for his eccentric lifestyle. He did not have a roof of his own, and spent his life as a nomadic tramp.

Possessions meant little to Erdős; most of his belongings would fit in a small suitcase, as dictated by his itinerant lifestyle. Awards and other earnings were generally donated to people in need and various worthy causes. He spent most of his life traveling between scientific conferences, universities and the homes of colleagues all over the world. He earned enough in stipends from universities as a guest lecturer, and from various mathematical awards, to fund his travels and basic needs; money left over he used to fund cash prizes for mathematicians.

He would typically show up at a colleague's doorstep and announce "my brain is open", staying long enough to collaborate on a few papers before moving on a few days later. In many cases, he would ask the current collaborator about whom to visit next.

Who is a PGOM LD AD LD CD ? See this video for the answer.

This, and many more similar stuff is available here. Take a look.

Who says, mathematicians have no sense of humour ?

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2016-03-20

10-2016 Another incredible story of a woman mathematician

Christine Ladd-Franklin

Did a PhD dissertation: "On the Algebra of Logic" at The Johns Hopkins University 1926 (1882) United States

Her dissertation was completed in 1882, however, the school did not award her with a Ph.D until 1926. She waited 44 years to actually get her PhD, and died a mere 4 years later.

Source : Mathematics Genealogy Project http://genealogy.math.ndsu.nodak.edu/id.php?id=41944

Biography: Biography of Christine Ladd Franklin

Case study of the prejudices she suffered: Christine Ladd’s life story is a casebook study of the prejudices that women, who wished to enter academia suffered in the nineteenth and early twentieth centuries.