<s>
Sinkov	B-General_Concept
statistics	I-General_Concept
,	O
also	O
known	O
as	O
log-weight	O
statistics	O
,	O
is	O
a	O
specialized	O
field	O
of	O
statistics	O
that	O
was	O
developed	O
by	O
Abraham	O
Sinkov	O
,	O
while	O
working	O
for	O
the	O
small	O
Signal	O
Intelligence	O
Service	O
organization	O
,	O
the	O
primary	O
mission	O
of	O
which	O
was	O
to	O
compile	O
codes	O
and	O
ciphers	B-Application
for	O
use	O
by	O
the	O
U.S.	O
Army	O
.	O
</s>
<s>
The	O
mathematics	O
involved	O
include	O
modular	O
arithmetic	O
,	O
a	O
bit	O
of	O
number	O
theory	O
,	O
some	O
linear	B-Language
algebra	I-Language
of	O
two	O
dimensions	O
with	O
matrices	B-Architecture
,	O
some	O
combinatorics	O
,	O
and	O
a	O
little	O
statistics	O
.	O
</s>
