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  2. Causality (physics) - Wikipedia

    en.wikipedia.org/wiki/Causality_(physics)

    Causality is the relationship between causes and effects. [1] [2] While causality is also a topic studied from the perspectives of philosophy and physics, it is operationalized so that causes of an event must be in the past light cone of the event and ultimately reducible to fundamental interactions. Similarly, a cause cannot have an effect ...

  3. Causal notation - Wikipedia

    en.wikipedia.org/wiki/Causal_notation

    Ecosystem example: correlation without causation [ edit ] Imagine the number of days of weather below one degrees Celsius, y {\displaystyle y} , causes ice to form on a lake, f ( y ) {\displaystyle f(y)} , and it causes bears to go into hibernation g ( y ) {\displaystyle g(y)} .

  4. Causality - Wikipedia

    en.wikipedia.org/wiki/Causality

    Cellier, Elmqvist, and Otter [48] describe causality forming the basis of physics as a misconception, because physics is essentially acausal. In their article they cite a simple example: "The relationship between voltage across and current through an electrical resistor can be described by Ohm's law: V = IR, yet, whether it is the current ...

  5. Causal structure - Wikipedia

    en.wikipedia.org/wiki/Causal_structure

    The causality violating set is the set of points through which closed causal curves pass. The boundary of the causality violating set is a Cauchy horizon . If the Cauchy horizon is generated by closed null geodesics, then there's a redshift factor associated with each of them.

  6. Causal system - Wikipedia

    en.wikipedia.org/wiki/Causal_system

    The idea that the output of a function at any time depends only on past and present values of input is defined by the property commonly referred to as causality. A system that has some dependence on input values from the future (in addition to possible dependence on past or current input values) is termed a non-causal or acausal system , and a ...

  7. Universal causation - Wikipedia

    en.wikipedia.org/wiki/Universal_causation

    Pluralized causal principle - there are pluralized versions of universal causation, that allow exceptions to the principle. Robert K. Meyer's causal chain principle, [15] uses set theory axioms, assumes that something must cause itself in set of causes and so universal causation doesn't exclude self-causation. Against infinite regress.

  8. Causal reasoning - Wikipedia

    en.wikipedia.org/wiki/Causal_reasoning

    The study of causality extends from ancient philosophy to contemporary neuropsychology; assumptions about the nature of causality may be shown to be functions of a previous event preceding a later one. The first known protoscientific study of cause and effect occurred in Aristotle's Physics. [1] Causal inference is an example of causal reasoning.

  9. Retrocausality - Wikipedia

    en.wikipedia.org/wiki/Retrocausality

    Retrocausality, or backwards causation, is a concept of cause and effect in which an effect precedes its cause in time and so a later event affects an earlier one. [ 1 ] [ 2 ] In quantum physics , the distinction between cause and effect is not made at the most fundamental level and so time-symmetric systems can be viewed as causal or retrocausal.