<s>
In	O
formal	O
language	O
theory	O
and	O
computer	B-General_Concept
science	I-General_Concept
,	O
Iota	B-Application
and	I-Application
Jot	I-Application
(	O
from	O
Greek	O
iota	B-Protocol
ι	O
,	O
Hebrew	O
yodh	O
י	O
,	O
the	O
smallest	O
letters	O
in	O
those	O
two	O
alphabets	O
)	O
are	O
languages	O
,	O
extremely	O
minimalist	O
formal	O
systems	O
,	O
designed	O
to	O
be	O
even	O
simpler	O
than	O
other	O
more	O
popular	O
alternatives	O
,	O
such	O
as	O
the	O
lambda	B-Language
calculus	I-Language
and	O
SKI	B-Application
combinator	I-Application
calculus	I-Application
.	O
</s>
<s>
Zot	O
(	O
2002	O
)	O
is	O
a	O
successor	O
to	O
Iota	B-Protocol
that	O
supports	O
input	B-General_Concept
and	I-General_Concept
output	I-General_Concept
.	O
</s>
<s>
Note	O
that	O
this	O
article	O
uses	O
Backus-Naur	O
form	O
to	O
describe	O
syntax	B-Application
.	O
</s>
<s>
Chris	O
Barker	O
's	O
universal	O
iota	B-Protocol
combinator	B-Application
has	O
the	O
very	O
simple	O
λf.fSK	O
structure	O
defined	O
here	O
,	O
using	O
denotational	B-Application
semantics	I-Application
in	O
terms	O
of	O
the	O
lambda	B-Language
calculus	I-Language
,	O
</s>
<s>
Iota	B-Protocol
is	O
the	O
LL(1 )	O
language	O
that	O
prefix	O
orders	O
trees	O
of	O
the	O
aforementioned	O
Universal	O
iota	B-Protocol
combinator	B-Application
leafs	O
,	O
consed	O
by	O
function	B-Algorithm
application	I-Algorithm
,	O
</s>
<s>
Jot	B-Application
is	O
the	O
regular	B-General_Concept
language	I-General_Concept
consisting	O
of	O
all	O
sequences	O
of	O
0	O
and	O
1	O
,	O
</s>
<s>
These	O
two	O
examples	O
are	O
the	O
base	O
cases	O
of	O
the	O
translation	O
of	O
arbitrary	O
SKI	O
terms	O
to	O
Jot	B-Application
given	O
by	O
Barker	O
,	O
</s>
<s>
making	O
Jot	B-Application
a	O
natural	O
Gödel	O
numbering	O
of	O
all	O
algorithms	O
.	O
</s>
<s>
Jot	B-Application
is	O
connected	O
to	O
Iota	B-Protocol
by	O
the	O
fact	O
that	O
and	O
by	O
using	O
the	O
same	O
identities	O
on	O
SKI	O
terms	O
for	O
obtaining	O
the	O
basic	O
combinators	B-Application
and	O
.	O
</s>
<s>
The	O
Zot	O
and	O
Positive	O
Zot	O
languages	O
command	O
Iota	B-Protocol
computations	O
,	O
from	O
inputs	O
to	O
outputs	O
by	O
continuation-passing	B-Application
style	I-Application
,	O
in	O
syntax	B-Application
resembling	O
Jot	B-Application
,	O
</s>
<s>
and	O
consumes	O
the	O
final	O
input	B-General_Concept
digit	O
by	O
continuing	O
through	O
the	O
continuation	O
.	O
</s>
