<s>
In	O
mathematics	O
and	O
physics	O
,	O
the	O
Artin	B-Algorithm
billiard	I-Algorithm
is	O
a	O
type	O
of	O
a	O
dynamical	O
billiard	O
first	O
studied	O
by	O
Emil	O
Artin	O
in	O
1924	O
.	O
</s>
