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Results tagged with variable-definitions
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user 61953
Questions on assigning and unassigning definitions to names that represent them, including issues raised by context and localization. Use tag [assignment] for issues relating to Set versus SetDelayed.
2
votes
1
answer
58
views
We would like to define $k$ in advance as an even number
Can we define in advance that $k$ is even?
For example, when defining the sequence $\{a_n\}$ inductively as follows,
input:
a[n_]:=If[Mod[Abs[a[n-1]-a[n-2]],2]==0,a[n-1]-a[n-2],a[n-1]-2];
a[1] = 3; …
- 291
6
votes
3
answers
179
views
How to define variables $a$,$b$,$c$,$d$ are all elements of set $\{2,3,5,7\}$?
I would appreciate it if somebody could help me with the following problem:
I want to create a Wolfram Language expression that states that all $a$,$b$,$c$,$d$ variables are elements of the set $\{2, …
- 291