Bijection Proof (a taste of math proof)

First part: N and Z have the same number of elements    • Do We REALLY Have More Integers?   And in this video, we will show that f is a bijection by using the definitions. Note: "one-to-one" is called "injective" and "onto" is also called "surjective" #bijectionproof #mathforfun My Game Changers! Blue Microphone: https://amzn.to/2DAbHYL black marker red marker: https://amzn.to/2UVLDCm Check out my site & social media 😃 T-shirts: https://teespring.com/stores/blackpen... 😃 https://blackpenredpen.com 😃   / blackpenredpen   😃   / blackpenredpen   😃   / blackpenredpen   😃 Wix: http://wixstats.com/?a=25754&c=124&s1= blackpenredpen 100/(1-x)