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Czech-Polish-Slovak Match
1996 Czech and Slovak Match
4
4
Part of
1996 Czech and Slovak Match
Problems
(1)
f (x)+kx = m with at least one integral solution x for any m
Source: Czech and Slovak Match 1996 P4
10/1/2017
Decide whether there exists a function
f
:
Z
ā
Z
f : Z \rightarrow Z
f
:
Z
ā
Z
such that for each
k
=
0
,
1
,
.
.
.
,
1996
k =0,1, ...,1996
k
=
0
,
1
,
...
,
1996
and for any integer
m
m
m
the equation
f
(
x
)
+
k
x
=
m
f (x)+kx = m
f
(
x
)
+
k
x
=
m
has at least one integral solution
x
x
x
.
number theory
Function equations
integer equation
algebra