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Show HN: The King Wen Permutation: [52, 10, 2] (gzw1987-bit.github.io)
chordbug 31 minutes ago [-]
We truly live in an age where facts that are worth "maybe one sentence of space on Wikipedia" can be expanded into full-blown AI-coded interactive websites. I'm not sure how to feel about this. I think in this case it ascribes an inappropriate sense of grandeur: making a mathematical curiosity (and is the result even that surprising?) seem like some deep truth has been unveiled, or we finally found God's Number.
thaumasiotes 5 minutes ago [-]
> and is the result even that surprising?

No.

The exposition has its problems too. Consider:

>> Zero fixed points — not a single hexagram occupies the same position in both orderings. The structural difference is total.

As a mathematical matter, the expected number of fixed points for any permutation is 1. Some have more. For some to have more, others must have less, and all of those will have 0.

But as a logical matter, "the structural difference is total" is pure gibberish. Consider these two permutations on 5 elements:

    1. [2, 3, 4, 5, 1]
    2. [5, 1, 2, 3, 4]
"Not a single element occupies the same position in both orderings."

But of course these two permutations have a nearly identical structure (they are rotations in opposite directions, and are each other's inverses); they are far more closely related to each other than either is to

    3. [4, 3, 2, 1, 5]
even though permutation 3 shares the assigned position of "3" with permutation 1, and the assigned position of "2" with permutation 2.
gezhengwen 1 hours ago [-]
I found this by accident while analyzing the I Ching with code. 81% of hexagrams are locked in one chain, none stays in its original position. You can verify it yourself in the browser. Has anyone seen this before?
dmos62 51 minutes ago [-]
Fascinating. I've barely any knowledge of I Ching. What motivated you to explore this and I Ching in general?
28 minutes ago [-]
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