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• PCS and all c∈C have minimum graph edit distance of i. (Proof sketch: There is a graph for which all acyclic tournaments with the same (minimal) graph-edit distance don't contain a specific subgraph). Graph in picture, the minimal edit distance is 3, the non-preserved consistent subgraph is a2→a4. This extends to arbitrarily big consistent subgraphs (replace all edges with acyclic tournaments with n nodes).

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Then you have the following impossibilities:

• PCS and f has polynomial runtime. (Proof sketch: finding an s of size k is in NP. Finding all of them is in NP as well.)
• PCS and C has polynomial size. (Proof sketch: You can construct a graph with exponentially many acyclic tournaments as subgraphs).

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Let f be a function that takes as input an inconsistent preference i and produces a set C of consistent preferences. Let S be the set of subgraphs of i for which it holds that for every s∈S: s is an acyclic subgraph, s is a subgraph of i, and s is maximal in i for those properties.

S shall contain all s that fulfill the above conditions.

Let PCS be the property that for every s∈S, s is a subgraph of at least one c∈C (every consistent subpreference appears at least once in a consistent version)

@rrogers Sorry, we just can't live without your banger posts

@zodmagus Also *definitely* never visit sci-sub.se or libgen.rs

Please

@rrogers *adds a name to the list of people to be cloned a million times*

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I just watched the BBC clip on Emmy Noether :) Absolutely astonished and recommend it to anybody in mathstodon.xyz. I knew she was famous and intelligent; I never knew how extensive and foundational her other work was; "modern algebra", topology, gauge theory, ....
From the broadcast, I would put her up with the heroes of mathematics; Euler, Gauss, ..
I know I am smart but I also know that there are people who are _really_ really smart, and it's clear that Noether was one of them.
Before I watched it this morning, it occurred to me "what would the world be like if Godel and Noether had married" (or worked together); I found it beyond even my SciFi fueled imagination :)

bbc.co.uk/sounds/play/m00025bw

Pearl is of course the GOAT, but the book doesn't look like the thing I'm looking for (not quite practical enough)

I kind of want to learn Bayesian Statistics real bad

But like the practical kind you can actually use to calculate likelihood ratios of experiments

Any reccs for textbooks? Ideally with code[1] *and* exercises

[1]: Best of Julia, 2nd best if Python, I don't wanna learn R :-/

Queering Hume's Guillotine: Ontological Crises, von Neumann-Morgenstern-inconsistent Preferences and Two Impossibility Theorems

Functional Decision Theory has a WP page

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I'm gonna experience some character development in a minute and ignore all other aspects of my life besides getting my gay little projects finished
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