Numeric function Updated 2025-07-16
This section is about functions that operate on numbers such as the integers or real numbers.
Octahedron Updated 2025-07-16
Octonion Updated 2025-07-16
Unlike the quaternions, it is non-associative.
Oracle Database Updated 2025-07-16
Often known simply as SQL Server, a terrible thing that makes it impossible to find portable SQL answers on Google! You just have to Google by specific SQL implementation unfortunately to find anything about the open source ones.
The following things come to mind when you look into research in this area, especially the search for BB(5) which was hard but doable:
108 Stars of Destiny Updated 2025-07-16
The concept is a strong part of Water Margin.
The very first chapter opens with Grand Commander Hou disrespecting spirits by opening up a sealed tomb and unintentionally releasing 108 demons who presumably reincarnate as humans, a backstory to the events that follow years later.
This is well shown in the Japanese The Water Margin, but is skipped in the Chinese The Water Margin unfortunately.
The concept is also central to the Suikoden video game.
Actually, now that Ciro Santilli thinks about it, these were already likely meant as a "collectible" element by the author of the original book, as is strongly suggested by all the little illustrations of each character present on the Wikipedia page. Just like e.g. Catholic saints. It's Pokemon, but 2000 years earlier.
Ciro would notably feel many years later, that as he met random people online who were interested in improving eduction, or was otherwise networking to reach his goals, as if he were actually building up his 108 stars of destiny.
A central part, and perhaps the most interesting part of the novel, is how each character has been motivated by injustice to join the rebellion. This reminds Ciro of Final Fantasy VI
DELETE (SQL) Updated 2025-07-16
INSERT (SQL) Updated 2025-07-16
Okular Updated 2025-07-16
This is generally good, especially compared to how crappy Evince, the default Ubuntu one, has been around 2014-2020.
Raster graphics Updated 2025-07-16
Represents image pixel by pixel, rather than by mathematical primitives such as done in vector graphics:
quoteinvestigator.com/2017/09/25/progress/ on Quote Investigator says it appeared in 1948. Can't easily check, but will believe it for now.
18.783 MIT course Updated 2025-07-16
math.mit.edu/classes/18.783, Wow, good slides! Well organized site! This is a good professor! And brutal course. 25 lectures, and lecture one ends in BSD conjecture!

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