– noted for his book of poems ‘Self-Portrait in a Convex Mirror’.

Here is the link to the Wikipedia article on him.

keywords: poems, poetry, verse

# Day: March 1, 2020

# new sense of ‘homer’

– one who lives at home, that is, with his / her parents.

This sense is not listed in the online Merriam-Webster dictionary, neither in the free abridged version nor in the pay-walled unabridged version.

keywords: omission, lexicography

# combinatorial proofs

Here is the link to the Wikipedia article on this topic.

keywords: Mathematics, alternative proof, simpler proof, more elegant proof

# Tupper’s self-referential formula

Here is the link to the Wikipedia article on this topic.

keywords: appearance, graph, floor function, modulo function, less than

# recursion

Recursion is when something is defined in terms of itself.

Here is the link to the Wikipedia article on this topic.

Note that if something is defined recursively, it may or may not be also expressible without recursion. The Wikipedia article implies, correctly, that the Fibonacci sequence, while defined recursively, can also be expressed without recursion, but stops short of naming any direct (‘closed-form’) representation of the Fibonacci sequence. Binet’s formula expresses the Fibonacci sequence without recursion.

Here is the link to the Wikipedia article that contains a discussion of Binet’s formula.

keywords: Mathematics, formula, recursive procedure, using some sourdough left over from the previous batch, bread

# a list of some puzzles

Here is the link.

keywords:

plus magazine

sharing cakes

weighing balls

magic 19

creating squares

drips

dropping eggs

counter logic

equal averages

(and much more)

# modulo operation

Here is the link to the Wikipedia article on this topic.

keywords: computing, Mathematics, remainder

# Tukey’s ninther

It is a ‘median of medians’.

Here is the link to the Wikipedia article that contains an explanation of it.

keywords: statistics, computational efficiency, estimation procedures for the median, robust estimator, limited recursion

# Gallia est omnis divisa en partes tres…

This is the opening of the commentary by Julius Caesar.

Here is the link to the commentary.

keywords: Latin, war

# wanted software feature

– a password-protected memo-document accessible directly from the screen-saver.

keywords: cyberspace, IT, Information Technology, user-friendliness, user-friendly, quick notes