• siano x e y due soggetti rispettivamente di sesso maschile e femminile;
• sia f:Love → Love , con f(x,y)=amore(x,y) con Love c IR;

TESI: Se x piange per y allora sicuramente x ama y,  quindi:

 amore(x,y) →∞         per t→∞

DIMOSTRAZIONE: La dimostrazione viene lasciata al lettore. (consiglio: si prenda spunto da fenomeni di vita reale).

You're my world, you're every breath I take
You're my world, you're every move I make
Other eyes see the stars up in the sky
But for me they shine within your eyes

As the trees reach for the sun above
So my arms reach out to you for love
With your hand resting in mine
I feel a power so divine

You're my world, you are my night and day
You're my world, you're every prayer I pray
If our love ceases to be
That is the end of my world for me

With your hand resting in mine
I feel a power so divine

You're my world, you are my night and day
You're my world, you're every prayer I pray
If our love ceases to be
That is the end of my world
End of my world
End of my world
End of my world for me

Helen Reddy "You're my world"

Alessandro Mara - Chiara - 1996