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        <rdf:li rdf:resource="https://community.wolfram.com/groups/-/m/t/3716598" />
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  <item rdf:about="https://community.wolfram.com/groups/-/m/t/3716598">
    <title>A short arithmetic program producing four CODATA-level constants</title>
    <link>https://community.wolfram.com/groups/-/m/t/3716598</link>
    <description>I would like to share a compact deterministic arithmetic program that produces four numerical values lying within the CODATA 2022 one-standard-uncertainty windows for:&#xD;
&#xD;
- the inverse fine-structure constant&#xD;
- the proton/electron mass ratio&#xD;
- the muon/electron mass ratio&#xD;
- the tau/electron mass ratio&#xD;
&#xD;
The code was motivated by a broader physical framework, but the point of this post is not to argue for that framework.&#xD;
&#xD;
The narrower question is this:&#xD;
&#xD;
Can this compact computational object be explained as ordinary numerical fitting, and if so, where is the fitted information stored?&#xD;
&#xD;
The program contains:&#xD;
&#xD;
- no empirical target constants as inputs&#xD;
- no decimal fit coefficients&#xD;
- no continuous optimization loop&#xD;
- no output-specific adjustable parameters&#xD;
&#xD;
In addition, the three mass-ratio outputs share the same denominator ladder.&#xD;
&#xD;
Wolfram Language code:&#xD;
&#xD;
```wolfram&#xD;
&#xD;
        u = 1;&#xD;
        r = 3;&#xD;
        A = r*(r - u);&#xD;
        B = 2;&#xD;
        n = A + B - u;&#xD;
        rel = A + B + r;&#xD;
        ph = n + B;&#xD;
        h = (rel + u) + n;&#xD;
        nVal = r + rel + ph + h;&#xD;
        cVal = 2*nVal;&#xD;
        atten = 1 - A/n^2;&#xD;
        Phi = nVal*r + rel + r/cVal + (rel - ph)/cVal^2 + (18/(n*Pi))*atten/cVal^3 + (4*Pi)*atten/cVal^4;&#xD;
        d1 = r + ph + u;&#xD;
        d2 = h*(nVal - (r + u));&#xD;
        d3 = d1*d2;&#xD;
        d4 = d2*(nVal - (r + u))*A*(rel - r);&#xD;
        Psi1 = cVal*(h + r) - (ph + r) + (rel - ph)/d1 - u/d2 + (rel - ph)/d3 - u/d4;&#xD;
        Psi2 = h*rel - r + (rel - u)/d1 - u/d2 + (r + u)/d3 + (h - r - u)/d4;&#xD;
        Psi3 = nVal*(cVal - u) - ph + (rel - ph)/d1 - (rel - ph)/d2 + (r + u)/d3 - (r*h)/d4;&#xD;
    &#xD;
    NumberForm[N[{Phi, Psi1, Psi2, Psi3}, 15], 15]&#xD;
&#xD;
&#xD;
Output:&#xD;
&#xD;
    {137.035999165800, 1836.15267343627, 206.768283284455, 3477.15145895483}&#xD;
&#xD;
For comparison, the CODATA 2022 reference values are approximately:&#xD;
&#xD;
    alpha^-1          = 137.035999177(21)&#xD;
    &#xD;
    proton/electron   = 1836.152673426(32)&#xD;
    &#xD;
    muon/electron     = 206.7682827(46)&#xD;
    &#xD;
    tau/electron      = 3477.23(23)&#xD;
&#xD;
&#xD;
&#xD;
All four outputs lie within the corresponding one-standard-uncertainty windows.&#xD;
&#xD;
Under a conservative unit-range normalization, the four simultaneous window hits roughly correspond to ~66 bits of target-window information.&#xD;
&#xD;
So my question is simple:&#xD;
&#xD;
**If this is ordinary numerical fitting, what is the information channel?**&#xD;
&#xD;
For completeness, I include a short note containing the description-length analysis:&#xD;
&#xD;
[https://doi.org/10.5281/zenodo.20158423][1]&#xD;
&#xD;
&#xD;
  [1]: https://doi.org/10.5281/zenodo.20158423</description>
    <dc:creator>Tetsuya Momose</dc:creator>
    <dc:date>2026-05-15T11:09:21Z</dc:date>
  </item>
  <item rdf:about="https://community.wolfram.com/groups/-/m/t/3715016">
    <title>Hat tile dynamics from dual-grid projection onto a fractal-subdivided torus</title>
    <link>https://community.wolfram.com/groups/-/m/t/3715016</link>
    <description>![Hat tile dynamics from dual-grid projection onto a fractal-subdivided torus][1]&#xD;
&#xD;
&amp;amp;[Wolfram Notebook][2]&#xD;
&#xD;
&#xD;
  [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=titleImage.png&amp;amp;userId=2932486&#xD;
  [2]: https://www.wolframcloud.com/obj/644687a3-8e85-4505-b3bc-cc74fbc04ee9</description>
    <dc:creator>Johannes Martin</dc:creator>
    <dc:date>2026-05-12T09:53:01Z</dc:date>
  </item>
  <item rdf:about="https://community.wolfram.com/groups/-/m/t/3714366">
    <title>Progress in the no-three-in-line-problem</title>
    <link>https://community.wolfram.com/groups/-/m/t/3714366</link>
    <description>![Progress in the no-three-in-line-problem][1]&#xD;
&#xD;
&amp;amp;[Wolfram Notebook][2]&#xD;
&#xD;
&#xD;
  [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=693022037_35804801055800585_4027629096720536130_n.jpg&amp;amp;userId=20103&#xD;
  [2]: https://www.wolframcloud.com/obj/7a439e86-9be9-457a-94b2-d58c415fb284</description>
    <dc:creator>Ed Pegg</dc:creator>
    <dc:date>2026-05-11T15:13:27Z</dc:date>
  </item>
  <item rdf:about="https://community.wolfram.com/groups/-/m/t/3712556">
    <title>Two open problems about Leibnizian strings</title>
    <link>https://community.wolfram.com/groups/-/m/t/3712556</link>
    <description>&amp;amp;[Wolfram Notebook][1]&#xD;
&#xD;
&#xD;
  [1]: https://www.wolframcloud.com/obj/f5ffb538-d69e-402b-8c12-c0def144513b</description>
    <dc:creator>Furkan Semih Dündar</dc:creator>
    <dc:date>2026-05-06T07:48:16Z</dc:date>
  </item>
  <item rdf:about="https://community.wolfram.com/groups/-/m/t/3695987">
    <title>The abc eraser: algebraic filtration and the emergence of universality</title>
    <link>https://community.wolfram.com/groups/-/m/t/3695987</link>
    <description>&amp;amp;[Wolfram Notebook][1]&#xD;
&#xD;
&#xD;
  [1]: https://www.wolframcloud.com/obj/12016646-05c7-4e0f-aafc-a180d14e3a8e</description>
    <dc:creator>Ramón Eduardo Chan López</dc:creator>
    <dc:date>2026-04-19T00:41:46Z</dc:date>
  </item>
  <item rdf:about="https://community.wolfram.com/groups/-/m/t/3696660">
    <title>Information symmetry in complementary lattice dynamics</title>
    <link>https://community.wolfram.com/groups/-/m/t/3696660</link>
    <description>A chromatic cellular automaton on {0,1}³ generates a cruciform pattern from a single seed (established in Post 3). At every timestep, the null-space complement of the pattern &amp;#x2014; obtained by mapping each state s → 7−s &amp;#x2014; is computed and compared to the positive space using five independent complexity measures: Shannon entropy, joint entropy of adjacent pairs, spatial mutual information, 2×2 block entropy, and Kolmogorov complexity approximation via compression.&#xD;
Result: the first four measures show exact equality C(P,t) = C(N,t) at every step. The fifth (Kolmogorov complexity approximated via compression) shows near-equality with fractional difference under 3%, consistent with encoder-dependent variation in a computable upper bound rather than genuine structural asymmetry. The structural complexity of the complement matches the complexity of the pattern &amp;#x2014; not approximately, but identically &amp;#x2014; across all information-theoretic measures tested.&#xD;
&#xD;
The complement operator also reveals a vertex absent from the automaton&amp;#039;s lifecycle. The lifecycle visits Red, Green, Blue, Yellow, and Magenta. Cyan (0,1,1) never appears. In the complement, Red maps to Cyan. Since Red is the most frequently renewed state (Dead → Idea), Cyan becomes the dominant active state in the null space. The vertex absent from the dynamics is the most prominent vertex of the shadow.&#xD;
&#xD;
Four questions for the community:&#xD;
&#xD;
1. Continuous extension. The information symmetry C(P,t) = C(N,t) holds by construction for any bijective complement on a finite vertex set. Does it extend to continuous state spaces on [0,1]³?&#xD;
&#xD;
2. Cyan dominance. The complement reveals Cyan (0,1,1) as the dominant active state of the null space. If Cyan were introduced into the lifecycle, would the complement become impoverished at a corresponding vertex?&#xD;
&#xD;
3. Simultaneous threshold crossing. The null-space complement achieves identical structural complexity without its own dynamics. In any system where the positive space crosses a self-referential complexity threshold, does the complement cross simultaneously?&#xD;
&#xD;
4. Universality challenge. Five complexity measures all show C(P,t) = C(N,t). Is there ANY computable complexity measure for which the equality fails?&#xD;
&#xD;
Notebook Attached.&#xD;
&#xD;
https://www.wolframcloud.com/obj/f17551bc-aec2-415b-9323-ad8865b5d46d</description>
    <dc:creator>Dustin Sprenger</dc:creator>
    <dc:date>2026-04-20T02:45:27Z</dc:date>
  </item>
  <item rdf:about="https://community.wolfram.com/groups/-/m/t/3673620">
    <title>Rule 110: conditional dynamics, the OR-XOR switch, and the structure of irreducibility</title>
    <link>https://community.wolfram.com/groups/-/m/t/3673620</link>
    <description>&amp;amp;[Wolfram Notebook][1]&#xD;
&#xD;
&#xD;
  [1]: https://www.wolframcloud.com/obj/ad350d33-f532-4a74-ba44-050ece07c9fb</description>
    <dc:creator>Ramón Eduardo Chan López</dc:creator>
    <dc:date>2026-04-03T07:56:17Z</dc:date>
  </item>
  <item rdf:about="https://community.wolfram.com/groups/-/m/t/3647733">
    <title>Rule 30 exact binomial-Lucas lifting: boolean logic to integer coefficients, Stirling &amp;amp; support sets</title>
    <link>https://community.wolfram.com/groups/-/m/t/3647733</link>
    <description>&amp;amp;[Wolfram Notebook][1]&#xD;
&#xD;
&#xD;
  [1]: https://www.wolframcloud.com/obj/b04b6551-fecf-465d-b02d-63d95abd751c</description>
    <dc:creator>Tigran Nersissian</dc:creator>
    <dc:date>2026-03-02T11:53:13Z</dc:date>
  </item>
  <item rdf:about="https://community.wolfram.com/groups/-/m/t/3640755">
    <title>Hidden symmetry in permutation space</title>
    <link>https://community.wolfram.com/groups/-/m/t/3640755</link>
    <description>&amp;amp;[Wolfram Notebook][1]&#xD;
&#xD;
&#xD;
  [1]: https://www.wolframcloud.com/obj/62b1d34a-2b56-4242-9809-6049ce46064f</description>
    <dc:creator>David Vasholz</dc:creator>
    <dc:date>2026-02-16T20:10:48Z</dc:date>
  </item>
  <item rdf:about="https://community.wolfram.com/groups/-/m/t/3639196">
    <title>From integers to art: fractal geometry of digit-sum parities</title>
    <link>https://community.wolfram.com/groups/-/m/t/3639196</link>
    <description>![From integers to art: fractal geometry of digit-sum parities][1]&#xD;
&#xD;
&amp;amp;[Wolfram Notebook][2]&#xD;
&#xD;
&#xD;
  [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=FromIntegerstoArt-fractalGeometryofDigit-SumParities.png&amp;amp;userId=20103&#xD;
  [2]: https://www.wolframcloud.com/obj/618232ce-99e9-4c82-8bb7-a7824760b505</description>
    <dc:creator>Sergio Quiroga</dc:creator>
    <dc:date>2026-02-12T20:31:54Z</dc:date>
  </item>
  <item rdf:about="https://community.wolfram.com/groups/-/m/t/3594686">
    <title>Numerically 2026 is unremarkable yet happy: semiprime with primitive roots</title>
    <link>https://community.wolfram.com/groups/-/m/t/3594686</link>
    <description>[![Numerically 2026 is unremarkable yet happy: semiprime with primitive roots][1]][2]&#xD;
&#xD;
&amp;amp;[Wolfram Notebook][3]&#xD;
&#xD;
&#xD;
  [1]: https://community.wolfram.com//c/portal/getImageAttachment?filename=Numerically2026isunremarkableyethappysemiprimewithprimitiveroots.png&amp;amp;userId=20103&#xD;
  [2]: https://community.wolfram.com//c/portal/getImageAttachment?filename=Numerically2026isunremarkableyethappysemiprimewithprimitiveroots.png&amp;amp;userId=20103&#xD;
  [3]: https://www.wolframcloud.com/obj/69781695-a7d5-4734-bf59-80ba72537964</description>
    <dc:creator>Anton Antonov</dc:creator>
    <dc:date>2025-12-21T20:34:09Z</dc:date>
  </item>
  <item rdf:about="https://community.wolfram.com/groups/-/m/t/3634252">
    <title>Extended Rule-110 family via ANF over GF(2): prior art and validation of a factor onto Rule 110</title>
    <link>https://community.wolfram.com/groups/-/m/t/3634252</link>
    <description>Hi everyone,&#xD;
&#xD;
My name is Tigran. I am working with the Wolfram Language on cellular automata and would like to ask whether a particular larger-neighborhood extension of Rule 110, defined in algebraic normal form (ANF) over GF(2), is already known, and how best to validate it rigorously.&#xD;
&#xD;
⸻&#xD;
&#xD;
Rule family (ANF over GF(2))&#xD;
&#xD;
For each neighborhood size m &amp;gt;= 3, I define a Boolean local rule&#xD;
&#xD;
f_m(x1, …, xm) =&#xD;
x_{m-1} + x_m + x_{m-1}x_m + (x1x2*…*xm)  (mod 2)&#xD;
&#xD;
where:&#xD;
	•	addition is XOR (mod 2),&#xD;
	•	multiplication is AND.&#xD;
&#xD;
For m = 3, this becomes&#xD;
&#xD;
f_3(x1, x2, x3) =&#xD;
x2 + x3 + x2x3 + x1x2*x3  (mod 2)&#xD;
&#xD;
which corresponds exactly to Wolfram Rule 110.&#xD;
&#xD;
Converting the ANF to a lookup table and then to a Wolfram rule index gives, for example:&#xD;
&#xD;
m = 3  -&amp;gt;  110&#xD;
m = 4  -&amp;gt;  28398&#xD;
m = 6  -&amp;gt;  7993589098607472366&#xD;
&#xD;
⸻&#xD;
&#xD;
Evolution setting&#xD;
&#xD;
I evolve a one-sided (causal) wedge with boundary zeros and a single-seed initial condition:&#xD;
&#xD;
a(0,0) = 1&#xD;
a(0,t &amp;gt; 0) = 0&#xD;
&#xD;
Out-of-range indices are treated as zero.&#xD;
&#xD;
The update rule is:&#xD;
&#xD;
a(n+1, t) =&#xD;
f_m( a(n, t-m+1), …, a(n, t) )&#xD;
&#xD;
This is a triangular / wedge evolution rather than a standard bi-infinite CA.&#xD;
&#xD;
⸻&#xD;
&#xD;
Observation&#xD;
&#xD;
Empirically, for certain neighborhood sizes &amp;#x2014; most notably&#xD;
&#xD;
m = 2^j + 2&#xD;
&#xD;
the resulting spacetime diagrams show persistent activity and localized structures strongly reminiscent of Rule 110, including glider-like behavior. This does not appear to be a trivial left-right symmetry or a simple shift.&#xD;
&#xD;
⸻&#xD;
&#xD;
Questions&#xD;
	1.	Prior art&#xD;
Is this specific ANF extension&#xD;
&#xD;
x_{m-1} + x_m + x_{m-1}x_m + (x1x2*…*xm)&#xD;
&#xD;
already known or studied (in Wolfram’s work, the CA literature, or related discussions of Rule-110 generalizations)?&#xD;
	2.	Validation / factorization&#xD;
What are the standard techniques to show that a larger-neighborhood Boolean CA factors onto Rule 110, for example via:&#xD;
&#xD;
	•	a sliding block code,&#xD;
	•	coarse-graining or renormalization,&#xD;
	•	substitution or rescaling,&#xD;
	•	or a proof of a semiconjugacy to Rule 110?&#xD;
&#xD;
Does the use of a wedge evolution change what would count as a valid factor or simulation?&#xD;
	3.	Practical workflow&#xD;
If the right goal is to exhibit an explicit map pi such that&#xD;
&#xD;
pi( evolution under f_m )&#xD;
= evolution under Rule 110 applied to pi(state),&#xD;
&#xD;
what would be a reasonable computational strategy (for example, searching small block maps) to test this in Wolfram Language?&#xD;
&#xD;
If useful, I can share a minimal notebook or GitHub repository&#xD;
&#xD;
Thank you very much for your time and for any pointers or references.&#xD;
&#xD;
Tigran &#xD;
&#xD;
    ClearAll[NumberCellularAutomatonFastC];&#xD;
    &#xD;
    NumberCellularAutomatonFastC[nMin_Integer, nMax_Integer, kMin_Integer,&#xD;
    kMax_Integer, ruleIndex_Integer, M_Integer /; M &amp;gt; 0] :=&#xD;
    Module[{bits, tMin = nMin, tMax = nMax, nMaxIter = kMax, outAll,&#xD;
    slice, cf},&#xD;
    bits = Reverse@IntegerDigits[ruleIndex, 2, 2^M];&#xD;
    cf = Compile[{{b, _Integer, 1}, {tmax, _Integer}, {nmax, _Integer}, {m, _Integer}},&#xD;
    Module[{prev, curr, out, n, t, j, idx, pattern, val},&#xD;
    prev = ConstantArray[0, tmax + 1];&#xD;
    prev[[1]] = 1;&#xD;
    out = ConstantArray[0, {nmax + 1, tmax + 1}];&#xD;
    out[[1]] = prev;&#xD;
    For[n = 1, n &amp;lt;= nmax, n++,&#xD;
    curr = ConstantArray[0, tmax + 1];&#xD;
    For[t = 0, t &amp;lt;= Min[tmax, (m - 1) n], t++,&#xD;
    pattern = 0;&#xD;
    (* pattern built from prev[t-(m-1)]..prev[t] *)&#xD;
    For[j = 1, j &amp;lt;= m, j++,&#xD;
    idx = t - m + j;&#xD;
    val = If[idx &amp;gt;= 0, prev[[idx + 1]], 0];&#xD;
    pattern = 2 pattern + val;&#xD;
    ];&#xD;
    curr[[t + 1]] = b[[pattern + 1]];&#xD;
    ];&#xD;
    prev = curr;&#xD;
    out[[n + 1]] = prev;&#xD;
    ];&#xD;
    out&#xD;
    ],&#xD;
    CompilationTarget -&amp;gt; &amp;#034;C&amp;#034;, RuntimeOptions -&amp;gt; &amp;#034;Speed&amp;#034;&#xD;
    ];&#xD;
    outAll = cf[bits, tMax, nMaxIter, M];&#xD;
    slice = outAll[[kMin + 1 ;; kMax + 1, tMin + 1 ;; tMax + 1]];&#xD;
    Transpose[slice]&#xD;
    ]&#xD;
    &#xD;
    XX[n_] :=&#xD;
    Symbol[&amp;#034;x&amp;#034; &amp;lt;&amp;gt; ToString[n]] + Symbol[&amp;#034;x&amp;#034; &amp;lt;&amp;gt; ToString[n - 1]] +&#xD;
    Symbol[&amp;#034;x&amp;#034; &amp;lt;&amp;gt; ToString[n - 1]]*Symbol[&amp;#034;x&amp;#034; &amp;lt;&amp;gt; ToString[n]] +&#xD;
    Product[Symbol[&amp;#034;x&amp;#034; &amp;lt;&amp;gt; ToString[j]], {j, 1, n}];&#xD;
    &#xD;
    Table[&#xD;
    {anfToRule[XX[(2^j + 2)], (2^j + 2)],&#xD;
    XX[(2^j + 2)],&#xD;
    ArrayPlot[&#xD;
    NumberCellularAutomatonFastC[&#xD;
    0, 10*(2^j + 2)^2 + 100,&#xD;
    0, 10*(2^j + 2)^2 + 100,&#xD;
    anfToRule[XX[(2^j + 2)], (2^j + 2)], (2^j + 2)],&#xD;
    ColorRules -&amp;gt; {0 -&amp;gt; Black, 1 -&amp;gt; LightBlue}]&#xD;
    },&#xD;
    {j, 0, 3}&#xD;
    ]</description>
    <dc:creator>Tigran Nersissian</dc:creator>
    <dc:date>2026-02-04T13:27:33Z</dc:date>
  </item>
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    <title>MGroups package: teaching finite group theory</title>
    <link>https://community.wolfram.com/groups/-/m/t/3623800</link>
    <description>&amp;amp;[Wolfram Notebook][1]&#xD;
&#xD;
&#xD;
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    <dc:creator>Naman T.</dc:creator>
    <dc:date>2026-01-24T08:40:01Z</dc:date>
  </item>
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    <link>https://community.wolfram.com/groups/-/m/t/3614977</link>
    <description>![enter image description here][1]&#xD;
&#xD;
&amp;amp;[Wolfram Notebook][2]&#xD;
&#xD;
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