Difference

Difference or differences may refer to::

See also

Relative change and difference

In any quantitative science, the terms relative change and relative difference are used to compare two quantities while taking into account the "sizes" of the things being compared. The comparison is expressed as a ratio and is a unitless number. By multiplying these ratios by 100 they can be expressed as percentages so the terms percentage change, percent(age) difference, or relative percentage difference are also commonly used. The distinction between "change" and "difference" depends on whether or not one of the quantities being compared is considered a standard or reference or starting value. When this occurs, the term relative change (with respect to the reference value) is used and otherwise the term relative difference is preferred. Relative difference is often used as a quantitative indicator of quality assurance and quality control for repeated measurements where the outcomes are expected to be the same. A special case of percent change (relative change expressed as a percentage) called percent error occurs in measuring situations where the reference value is the accepted or actual value (perhaps theoretically determined) and the value being compared to it is experimentally determined (by measurement).

Complement (set theory)

In set theory, a complement of a set A refers to things not in (that is, things outside of) A. The relative complement of A with respect to a set B is the set of elements in B but not in A. When all sets under consideration are considered to be subsets of a given set U, the absolute complement of A is the set of all elements in U but not in A.

Relative complement

If A and B are sets, then the relative complement of A in B, also termed the set-theoretic difference of B and A, is the set of elements in B, but not in A.

The relative complement of A in B is denoted B ∖ A according to the ISO 31-11 standard (sometimes written B – A, but this notation is ambiguous, as in some contexts it can be interpreted as the set of all b – a, where b is taken from B and a from A).

Formally

Examples:

If is the set of real numbers and is the set of rational numbers, then is the set of irrational numbers.

The following lists some notable properties of relative complements in relation to the set-theoretic operations of union and intersection.

321 EOD Squadron

321 EOD & Search Squadron 11 EOD Regiment RLC is a unit of the British Army responsible for Explosive Ordnance Disposal and Search duties in Northern Ireland.

The unit was previously titled 321 EOD Unit, then 321 EOD Company RAOC Royal Army Ordnance Corps and was re-badged as a unit of the Royal Logistic Corps in April 1993, now part of 11 Explosive Ordnance Disposal Regiment RLC. With its Headquarters at Aldergrove Flying Station near Antrim, the unit covers the entire province of Northern Ireland. The unit is honoured at the Palace Barracks memorial garden and today remains the most decorated unit in the British Army. 321 is a well equipped unit and has been at the forefront of developing new equipment.

Detachments

Whilst Operation Banner was running, 321 EOD had detachments at the following locations

As at Oct 2015, the Sqn is based at Aldergrove and Palace Barracks in Belfast

References

External links

Theodiscus

Theodiscus (the Latinised form of a Germanic word meaning "vernacular" or "of the common people") is a Medieval Latin adjective referring to the Germanic vernaculars of the Early Middle Ages. It is the precursor to a number of terms in West Germanic languages, namely the English exonym "Dutch", the German endonym "Deutsch", and the Dutch exonym "Duits".

The word theodism, a neologism for a branch of Germanic neopaganism, is based on the Old English form of the word.

Etymology

It is derived from Common Germanic *þiudiskaz. The stem of this word, *þeudō, meant "people" in Common Germanic, and *-iskaz was an adjective-forming suffix, of which -ish is the Modern English form. The Proto-Indo-European root *teutéh₂- ("tribe"), which is commonly reconstructed as the basis of the word, is related to Lithuanian tautà ("nation"), Old Irish túath ("tribe, people") and Oscan touto ("community"). The various Latin forms are derived from West Germanic *þiudisk and its later descendants.

The word came into Middle English as thede, but was extinct in Early Modern English (although surviving in the English place name Thetford, 'public ford'). It survives as the Icelandic word þjóð for "people, nation", the Norwegian (Nynorsk) word tjod for "people, nation", and the word for "German" in many European languages including German deutsch, Dutch Duits, Yiddish דײַטש daytsh, Danish tysk, Norwegian tysk, Swedish tyska, Spanish tudesco and Italian tedesco.

EOD

EOD may refer to:

Business and organizations

Computing and technology

Entertainment and media

Timing and scheduling