Telescope Updated 2025-07-16
Virgo Supercluster Updated 2025-07-16
Composed mostly of the Virgo cluster and the Local group.
Commutator Updated 2025-07-16
Order (algebra) Updated 2025-07-16
The order of a algebraic structure is just its cardinality.
Sometimes, especially in the case of structures with an infinite number of elements, it is often more convenient to talk in terms of some parameter that characterizes the structure, and that parameter is usually called the degree.
Strava Updated 2025-07-16
Blog Updated 2025-07-16
E-learning website Updated 2026-08-07
Generally, if something is labelled as "e-learning", it's not a good sign, as it implies that it adheres to the "teacher"/"student" separation which Ciro Santilli much despises: E-learning websites must allow students to create learning content.
Mailing list Updated 2025-07-16
It boggles Ciro Santilli's mind that people use mailing list to collaborate on projects!
The only explanation is that the dinosaurs who created the projects are unable to adapt to new superior technologies.
Yes, Ciro is talking to you, big fundamental projects from last century: Linux kernel, GNU Compiler Collection (gcc.gnu.org/lists.html), Binutils (sourceware.org/binutils/), etc.
Some of you are already using Bugzilla for the bugs, so kudos. But if you've seen their benefit, why you still use the mailing list for patches?
Advantages of mailing lists:
Disadvantages: everything else:
Not sure:
  • you can have infinitely many trackers to replicate data in case apocalypse happens in some part of the world.
    Although I'm not sure this is an advantage, as you don't know anymore which one is the canonical trackers an advantage, as you don't know anymore which one is the canonical tracker.
    And all web interfaces already have an API to export messages, and someone has already scripted it to import from any web UI to any web UI for you.
    And GitHub offers infinite precise history transparently on its API.
Review site Updated 2025-07-16

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