# wo / tpg

Commits on Feb 5, 2020
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Commits on Feb 4, 2020
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`Signed-off-by: wo <wo@umsu.de>`
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Commits on Jan 15, 2020
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Commits on Jan 14, 2020
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Commits on Jan 13, 2020
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Commits on Jan 11, 2020
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Commits on Jan 10, 2020
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`The naive CNF algorithm produces 16384 clauses for ((∃x∀y(Px↔Py)↔(∃zQz↔∀wQw))↔(∃x2∀x3(Qx2↔Qx3)↔(∃x4Px4↔∀x5Px5))). I now use tseitin transformations.`
Commits on Dec 3, 2019
1. wo committed Dec 3, 2019
```When reaching the depthLimit, I used to discard the current tree and switch to
one of its alternatives; when there were no alternatives left, I increased the
depthLimit and kept working with the last tree.

This is not ideal because the last tree in the list of alternatives is often not
the simplest, and we effectively never reconsider the earlier
alternatives. Restarting the tree construction from scratch whenever the
depthlimit is reached fixes this, but it creates a lot of redundancy.

This patch instead keeps the alternatives in memory even when depthlimit is
reached. When the limit is increased, we simply go back to the first alternative
and expand it some more.```
Commits on Oct 29, 2019
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```…on branch

In the S4 tree for (A ∧ ¬□A)→□¬□A, (¬A ∧ ◇A)→□◇A |= ◇□A→□◇A the tree construction got stuck in a loop at step 57. Here (or in 60 etc.), it should try expanding the modalGamma formula with w2 instead of w1, but it kept trying w1 because the result of that modalGamma application is already on the branch, so it couldn't find it when looking if an instance term has already been used.```
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Commits on Oct 21, 2019
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Commits on Oct 20, 2019
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Commits on Oct 13, 2019
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`In the S5 proof for (□p↔◇q)→◇(p↔q) this caused a redundant node 21 (in step 31).`
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Commits on Oct 12, 2019
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Commits on Sep 13, 2019
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`…m individuals`
Commits on Sep 12, 2019
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Commits on Sep 4, 2019
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