- #1
CuppoJava
- 24
- 0
Hi,
I devised this problem for myself as part of a bigger question that I'm working on, and am having trouble solving it. I think it involves a nested induction proof but I am not sure how to start. A tip on how to begin would be much appreciated.
Thanks
-Patrick
[itex]
S_0 = \{\}
[/itex]
[itex]
S_i = \{0\} \bigcup \{s + \pi | s \in S_{i-1}\}
[/itex]
Show that [itex] S_i \subseteq S_{i+1} [/itex] for all [itex]i[/itex].
I started by converting the problem to the following form:
[itex]\forall i > 0, 0 \in S_i[/itex]
[itex]\forall s \in S_i, s + \pi \in S_{i + 1}[/itex]
Show that [itex] \forall s \in S_i, s \in S_{i + 1} [/itex]
But I don't know what to do next.
I devised this problem for myself as part of a bigger question that I'm working on, and am having trouble solving it. I think it involves a nested induction proof but I am not sure how to start. A tip on how to begin would be much appreciated.
Thanks
-Patrick
Homework Statement
[itex]
S_0 = \{\}
[/itex]
[itex]
S_i = \{0\} \bigcup \{s + \pi | s \in S_{i-1}\}
[/itex]
Show that [itex] S_i \subseteq S_{i+1} [/itex] for all [itex]i[/itex].
The Attempt at a Solution
I started by converting the problem to the following form:
[itex]\forall i > 0, 0 \in S_i[/itex]
[itex]\forall s \in S_i, s + \pi \in S_{i + 1}[/itex]
Show that [itex] \forall s \in S_i, s \in S_{i + 1} [/itex]
But I don't know what to do next.