A memorable quote from Tinker Tailor Soldier Spy:

Basically it is a larger space such that there exists a surjection from the large space onto the smaller space, while still being compatible with the topology of the small space.

We can characterize the cover by how injective the function is. E.g. if two elements of the large space map to each element of the small space, then we have a double cover and so on.

Types:

The last value we will likely every know for the busy beaver function! BB(6) is likely completely out of reach forever.

By 2023, it had basically been decided by the The Busy Beaver Challenge as mentioned at: discuss.bbchallenge.org/t/the-30-to-34-ctl-holdouts-from-bb-5/141, pending only further verification. It is going to be one of those highly computational proofs that will be needed to be formally verified for people to finally settle.

As that project beautifully puts it, as of 2023 prior to full resolution, this can be considered the:on the Busy beaver scale.

A fast version of a somewhat subset of csvkit, written in C.

Build failed with undefined reference to pcre_config on Ubuntu 23.04: github.com/DavyLandman/csvtools/issues/18

Unfortunately it is lacking some basic options, like optional header + selecting column by index on csvgrep (though csvcut has it). The project seems kind of dead.

Also unclear if it allows to filter + print only selected columns.

Liguri Mosulishvili does not appear to be a widely recognized individual, term, or concept in the public domain as of my last knowledge update in October 2023. It's possible that it could refer to a specific person, an emerging topic, or a term that has arisen after that date.

Vassili Nesterenko might refer to a specific individual, but without further context, it's difficult to identify who that might be, as there could be multiple people with that name. If you are referring to a notable figure, please provide additional details, such as their profession or contributions, so I can give you accurate information.

In the context of Wikipedia and similar collaborative projects, "stubs" refer to articles that are incomplete and provide insufficient information on a topic. They are essentially minimal entries that may be just a couple of paragraphs long and need more content to adequately cover the subject matter.

The 21st century has seen significant contributions from Brazilian physicists in various fields of physics, including condensed matter physics, particle physics, astrophysics, and quantum information. Some notable Brazilian physicists and their contributions include: 1. **Marcelo Gleiser**: An influential theoretical physicist who has made contributions to cosmology and the understanding of the origins of the universe. He is also known for his work in science communication and his efforts to bridge science and spirituality.

The 21st century has seen numerous British physicists making significant contributions to various fields of physics, including theoretical physics, astrophysics, condensed matter physics, and more. Here are some notable figures: 1. **Peter Higgs** - Best known for his theoretical work on the Higgs mechanism, which explains how particles acquire mass. The discovery of the Higgs boson at CERN in 2012 validated his predictions. 2. **Brian Cox** - An experimental physicist and science communicator.

The 21st century has seen significant contributions from Irish physicists across various fields. Some notable figures include: 1. **Andrew McGrady**: Known for his work in astrophysics and cosmology, McGrady has contributed to our understanding of dark matter and dark energy. 2. **Catherine O'Connor**: A prominent physicist in the areas of condensed matter physics and materials science, she has worked on novel materials and their applications. 3. **John G.

The 21st century has seen a number of prominent Israeli physicists making significant contributions across various fields of physics, including condensed matter physics, cosmology, quantum information, and particle physics, among others. Here are a few notable figures: 1. **Nissim F. (Nitzan) Cohen** - Known for his work in theoretical physics, particularly in areas such as quantum mechanics and statistical physics.

The linear span (or simply span) of a set of vectors is a fundamental concept in linear algebra.