ازدایش azdâyeš (#)
*Fr.: information*
1) Knowledge gained through study, communication, research, instruction, etc.
2) Knowledge communicated or received concerning a particular fact or circumstance; news.
3) The act or fact of informing.
4) A sequence of signals that conveys a message to a receiver. Information does
not exist on its own. It is contained within something and is coded.
The notion of information involves → *uncertainty* and
→ *randomness*;
hence the necessity for calling on → *probability theory*
and → *statistics*.
See also:
→ *information content*,
→ *information entropy*,
→ *information flow*,
→ *information paradox*,
→ *information science*,
→ *information technology*,
→ *information theory*,
→ *infosphere*,
→ *quantum information*,
→ *entropy*. Verbal noun of → *inform*. |

پربنهی ِ ازدایش parbane-ye azdâyeš
*Fr.: contenu d'information*
The → *negative* of the → *logarithm*
of the → *probability* that a particular
→ *message* or → *symbol* will be emitted by a
→ *source*. → *information*; → *content*. |

درگاشت ِ ازدایش dargâšt-e azdâyeš
*Fr.: entropie de l'information*
The measure of information, which is usually expressed
by the average number of bits needed for storage or communication.
In other words, the degree to which the values of a
→ *random variable* *X*
are dispersed. If the → *probability density function* of
*X* is *P(x)*, the entropy is defined by:
*H(X)* = -Σ *P(x)* log *P(x)*. Also called
→ *Shannon entropy*. → *information*; → *entropy*. |

تچان ِ ازدایش tacân-e azdâyeš
*Fr.: flot d'information*
The flow of data into a system or to the end users. → *information*; → *flow*. |

پارادخش ِ ازدایش pârâdaxš-e azdâyeš
*Fr.: paradoxe de l'information*
A paradox raised in 1976 by S. Hawking (1942-2018) whose analysis of
the thermodynamic properties of → *black hole*s
led him to the prediction that black holes are not in fact black, but
radiate due to quantum effects. This implied that, due to the
→ *Hawking radiation*, a black hole would
eventually evaporate away, leaving nothing. This deduction presented
a problem for → *quantum mechanics*,
which maintains that
information can never be lost.
This topic is a matter of intense debate. Many solutions have been
proposed, but all of them have serious drawbacks. In
order to analyze better these solutions one needs a quantum gravity
theory, which does not exist at the moment.
In brief, either the idea of → *quantum unitarity*
must be given up, or
a mechanism should be found by which information is not lost after it
falls into a black hole. → *information*; → *paradox*. |

دانش ِ ازدایش، ازداییک dâneš-e azdâyeš azdâyik (#)
*Fr.: informatique*
Same as → *informatics*. → *information*; → *science*. |

تشنیکشناسی ِ ازدایش tašnik-šenâsi-ye azdâyeš
*Fr.: technologie de l'informtion*
The science and activity of receiving, storing, processing, and transmitting information by
using → *computer*s. → *information*; → *technology*. |

نگرهی ِ ازدایش negare-ye azdâyeš (#)
*Fr.: théorie de l'information*
The mathematical theory that defines, quantifies,
and analyzes the concept of → *information*.
It involves → *probability theory* in
→ *transmission* of → *message*s
when the → *bit*s of information are subject to various
distortions. Its goal is to enable as much information as possible to be reliably
stored on a medium, retrieved, or communicated.
See also: → *information content*,
→ *information entropy*,
→ *information flow*,
→ *information paradox*,
→ *information science*,
→ *information theory*,
→ *quantum information*,
→ *entropy*. → *information*; → *theory*. |

ازدایش ِ کوآنتومی azdâyeš-e kuântomi
*Fr.: information quantique*
The science concerned with the transmission, storage, and processing of
information using quantum mechanical systems. It exploits
the notion of → *quantum entanglement* between systems and
joins several fields of knowledge, mainly quantum physics, information, computation,
and probability. → *quantum*; → *information*. |