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  2. Life - Wikipedia

    en.wikipedia.org/wiki/Life

    Life is a quality that distinguishes matter that has biological processes, such as signaling and self-sustaining processes, from matter that does not. It is defined descriptively by the capacity for homeostasis, organisation, metabolism, growth, adaptation, response to stimuli, and reproduction. All life over time eventually reaches a state of ...

  3. Meaning of life - Wikipedia

    en.wikipedia.org/wiki/Meaning_of_life

    In the Judaic worldview, the meaning of life is to elevate the physical world ('Olam HaZeh') and prepare it for the world to come (' Olam HaBa '), the messianic era. This is called Tikkun Olam ("Fixing the World"). Olam HaBa can also mean the spiritual afterlife, and there is debate concerning the eschatological order.

  4. Turing machine - Wikipedia

    en.wikipedia.org/wiki/Turing_machine

    Classes of automata. (Clicking on each layer gets an article on that subject) A Turing machine is a mathematical model of computation describing an abstract machine [1] that manipulates symbols on a strip of tape according to a table of rules. [2] Despite the model's simplicity, it is capable of implementing any computer algorithm.

  5. Continuous function - Wikipedia

    en.wikipedia.org/wiki/Continuous_function

    e. In mathematics, a continuous function is a function such that a small variation of the argument induces a small variation of the value of the function. This implies there are no abrupt changes in value, known as discontinuities. More precisely, a function is continuous if arbitrarily small changes in its value can be assured by restricting ...

  6. Teacher - Wikipedia

    en.wikipedia.org/wiki/Teacher

    A teacher, also called a schoolteacher or formally an educator, is a person who helps students to acquire knowledge, competence, or virtue, via the practice of teaching . Informally the role of teacher may be taken on by anyone (e.g. when showing a colleague how to perform a specific task). In some countries, teaching young people of school age ...

  7. Scientific theory - Wikipedia

    en.wikipedia.org/wiki/Scientific_theory

    A scientific theory is an explanation of an aspect of the natural world and universe that can be (or a fortiori, that has been) repeatedly tested and corroborated in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results. Where possible, some theories are tested under controlled ...

  8. Organism - Wikipedia

    en.wikipedia.org/wiki/Organism

    Organism. An organism is defined in a medical dictionary as any living thing that functions as an individual. [1] Such a definition raises more problems than it solves, not least because the concept of an individual is also difficult. Many criteria, few of them widely accepted, have been proposed to define what is an organism.

  9. Real number - Wikipedia

    en.wikipedia.org/wiki/Real_number

    Real number. In mathematics, a real number is a number that can be used to measure a continuous one- dimensional quantity such as a distance, duration or temperature. Here, continuous means that pairs of values can have arbitrarily small differences.