Metamath Proof Explorer


Theorem 2lt10

Description: 2 is less than 10. (Contributed by Mario Carneiro, 10-Mar-2015) (Revised by AV, 8-Sep-2021) (Proof shortened by Umit Teoman Dogan, 10-Jun-2026)

Ref Expression
Assertion 2lt10
|- 2 < ; 1 0

Proof

Step Hyp Ref Expression
1 2nn0
 |-  2 e. NN0
2 2re
 |-  2 e. RR
3 9re
 |-  9 e. RR
4 2lt9
 |-  2 < 9
5 2 3 4 ltleii
 |-  2 <_ 9
6 1 5 le9lt10
 |-  2 < ; 1 0