Conversation

Charlotte lotteheartplural/Cinny cinny_heart_plural thetadelta ursaminor treblesand

maths nerdsnipe: numerical base where 9+10=21 (written exactly like this)

2
1
2

@charlotte assuming you don't redefine the meaning of 1 and 0, that's not possible because 9 is a single digit number so 9+10 = 19 in every base where those digits exist

1
0
0

@ben the racclosest i have gotten is bijective bases where in bijective nonary 9+11=21

ofc it’s 9+10 and 0 is not a digit in that base

1
0
1

@charlotte @ben Now we just need a formal proof /j

0
0
0
@charlotte base 9.5? who says the numerical base has to be an integer...
1
0
0

@miifox that would be 19 tho (18.5 in decimal) not 21 (20 in decimal)

0
0
0