User:BlaseDavid

$$Age = \mathcal{f} x\;|\;x = 2007-1987\}$$

$$Education = \mathcal{f} y\;|\;y = \;Biology\;student\}$$

$$Nationality = \mathcal{f} z\;|\;z = \;Hungarian\}$$

$$BlaseDavid = \mathcal{f} geek\;|\; geek \in (Age \bigcup Education \bigcup Nationality) \}$$

$$My Weblog = \mathcal{f} blazedavid.wordpress.com \}$$