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# Skup i njegovi elementi

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Author: Jelena Kenić
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This tutorial is a part of the educational materials that I've created with my students on our site ( www.ucionica17.weebly.com )

Ⓒ All site content on www.ucionica17.weebly.com is the property of the Math Workshop "Kefalica". Please, don't reproduct, distribute or publicate anything without our permission.

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Tutorial

## ŠTA JE SKUP I KOJI SU NJEGOVI ELEMENTI?

SKUP je celina, objekat, koga čine članovi sa istim svojstvom (odlikom).Kako bismo naznačili da je skup celina, upotrebljavamo vitičaste zagrade { , } kojima ograđujemo članove (elemente) skupa.

Imena skupova su obično velika, štampana slova latinice.

Na primer:

* Skup A je skup prirodnih brojeva koji su manji od pet je skup koji ćemo zapisati:
A={1, 2, 3, 4, 5}.
Brojevi: 1, 2, 3, 4, 5 su ELEMENTI (članovi) skupa A.

* Dati skup A možemo zapisati i na drugi način, ističući osobinu koja je zajednička za sve elemente skupa. U našem slučaju to su dve osobine:

element skupa A je PRIRODAN BROJ i
element skupa A je MANJI OD 5:

A={x|x je prirodan broj i x<5}

Čitamo:
SKUP A JE SKUP SVIH ELEMENATA x, GDE JE x PRIRODAN BROJ I MANJI OD 5.