Jump to content

Wikipedia:Main Page history/2024 August 6

From Wikipedia, the free encyclopedia

Welcome to Wikipedia

,
6,863,369 articles in English

From today's featured article

Existential quantifier, used in logic to express existence
Existential quantifier, used in logic to express existence

Existence is the state of having being or reality. It is often contrasted with essence, since one can understand the essential features of something without knowing whether it exists. Ontology studies existence and differentiates between singular existence of individual entities and general existence of concepts or universals. Entities present in space and time have concrete existence, in contrast to abstract entities, like numbers and sets. Other distinctions are between possible, contingent, and necessary existence and between physical and mental existence. Some philosophers talk of degrees of existence but the more common view is that an entity either exists or not, with no intermediary states. It is controversial whether existence can be understood as a property of individual objects and, if so, whether there are nonexistent objects. The concept of existence has a long history and played a role in the ancient period in pre-Socratic, Hindu, Buddhist, and Daoist philosophy. (Full article...)

Recently featured:

Did you know ...

Céline Dept
Céline Dept

In the news

Sheikh Hasina in 2021
Sheikh Hasina

On this day

August 6

Street fighting during the Battle of Saint-Malo
Street fighting during the Battle of Saint-Malo
More anniversaries:
ATLAS experiment

ATLAS is the largest general-purpose particle detector experiment at the Large Hadron Collider (LHC), a particle accelerator at CERN (the European Organization for Nuclear Research) in Switzerland. The experiment is designed to take advantage of the unprecedented energy available at the LHC and observe phenomena that involve highly massive particles which were not observable using earlier lower-energy accelerators. ATLAS was one of the two LHC experiments involved in the discovery of the Higgs boson in July 2012. It was also designed to search for evidence of theories of particle physics beyond the Standard Model. This image shows the eight toroid magnets surrounding the calorimeter in the centre.

Photograph credit: Maximilien Brice, CERN

Other areas of Wikipedia

  • Community portal – The central hub for editors, with resources, links, tasks, and announcements.
  • Village pump – Forum for discussions about Wikipedia itself, including policies and technical issues.
  • Site news – Sources of news about Wikipedia and the broader Wikimedia movement.
  • Teahouse – Ask basic questions about using or editing Wikipedia.
  • Help desk – Ask questions about using or editing Wikipedia.
  • Reference desk – Ask research questions about encyclopedic topics.
  • Content portals – A unique way to navigate the encyclopedia.

Wikipedia's sister projects

Wikipedia is written by volunteer editors and hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other volunteer projects:

Wikipedia languages