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Z4

Z4 (often written as z4) may refer to several unrelated concepts in mathematics, automotive engineering, and computer science. The meaning depends on context, and the term appears in both academic and popular usage.

In mathematics, Z4 denotes the ring of integers modulo 4, also written as Z/4Z. This structure consists

In automotive uses, the BMW Z4 is a two-seat sports car produced by BMW since 2002. It

In computer science, Z4 is an SMT (satisfiability modulo theories) solver developed by researchers at Microsoft

of
four
elements
{0,
1,
2,
3}
with
arithmetic
performed
modulo
4.
It
is
a
finite
ring
that
is
not
a
field
because
2
is
a
zero
divisor.
The
units
in
Z4
are
1
and
3.
The
additive
structure
is
a
cyclic
group
of
order
4.
In
some
texts,
the
same
notation
Z4
is
used
to
denote
the
cyclic
group
of
order
4,
though
group
theory
papers
may
prefer
alternative
notation
such
as
C4.
was
introduced
as
a
successor
to
the
BMW
Z3
and
has
appeared
in
several
generations
with
body
styles
including
roadster
and
coupe.
The
Z4
is
known
for
its
rear-wheel-drive
layout
and
a
range
of
four-
and
six-cylinder
engines,
including
turbocharged
options,
and
it
has
been
marketed
as
a
luxury
sport
model
in
various
global
markets.
Research.
It
extends
earlier
SMT
work
and
is
used
for
formal
verification,
software
analysis,
and
research.
Z4
supports
a
variety
of
theories
such
as
arithmetic,
arrays,
bit-vectors,
and
uninterpreted
functions,
emphasizing
performance
and
integration
with
verification
workflows.