- Inicio
- Set theory
- Definition and notation of sets
- Ejercicios
Definition and notation of sets
Define the following sets by compression:
a) $A = \{b,c,d,f,g,h,\ldots,z\}$ b) $B = \{a,e,i,o,u\}$ c) $C = \{1,2,3,4,5\}$
In the first, we notice that the elements of our set are the consonants of the ABC, therefore, we can define the set $A$ as $A =\{\text{consonants of the alphabet}\}$.
The second are the vowels of the alphabet, so that $B = \{\text{vowels of the alphabet}\}$.
And the third are the natural numbers less than or equal to $5$, then $C = \{x\in\mathbb{N} \ | \ x\leq 5 \}$.
a) $A =\{\text{consonants of the alphabet}\}$
b) $B = \{\text{vowels of the alphabet}\}$
c) $C = \{x\in\mathbb{N} \ | \ x\leq 5 \}$