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  1. Riffs and Rotes • Happy New Year 2026
    inquiryintoinquiry.com/2026/01

    There's a deep mathematical significance I see in the following structures, and I'm hoping one day to find a way to explain all the things I see there. Meanwhile, you may take them as an amusing diversion in recreational maths.

    \( \text{Let} ~ p_n = \text{the} ~ n^\text{th} ~ \text{prime}. \)

    \( \begin{array}{llcl}
    \text{Then} & 2026 & = & 2 \cdot 1013
    \\
    && = & p_1 p_{170}
    \\
    && = & p_1 p_{2 \cdot 5 \cdot 17}
    \\
    && = & p_1 p_{p_1 p_3 p_7}
    \\
    && = & p_1 p_{p_1 p_{p_2} p_{p_4}}
    \\
    && = & p_1 p_{p_1 p_{p_{p_1}} p_{p_{{p_1}^{p_1}}}}
    \end{array} \)

    No information is lost by dropping the terminal 1s. Thus we may write the following form.

    \[ 2026 = p p_{p p_{p_p} p_{p_{p^p}}} \]

    The article linked below tells how forms of that order correspond to a family of digraphs called “riffs” and a family of graphs called “rotes”.

    The riff and rote for 2026 are shown in the next two Figures.

    Riff 2026
    inquiryintoinquiry.com/wp-cont

    Rote 2026
    inquiryintoinquiry.com/wp-cont

    Reference —

    Riffs and Rotes
    oeis.org/wiki/Riffs_and_Rotes

    cc: academia.edu/community/VBA6Qz
    cc: researchgate.net/post/Riffs_an

    #Arithmetic #Combinatorics #Computation #Factorization #GraphTheory #GroupTheory
    #Logic #Mathematics #NumberTheory #Primes #Recursion #Representation #RiffsAndRotes

  2. Riffs and Rotes • Happy New Year 2025
    inquiryintoinquiry.com/2025/01

    \( \text{Let} ~ p_n = \text{the} ~ n^\text{th} ~ \text{prime}. \)

    \( \text{Then} ~ 2025
    = 81 \cdot 25
    = 3^4 5^2 \)

    \( = {p_2}^4 {p_3}^2
    = {p_2}^{{p_1}^{p_1}} {p_3}^{p_1}
    = {p_{p_1}}^{{p_1}^{p_1}} {p_{p_2}}^{p_1}
    = {p_{p_1}}^{{p_1}^{p_1}} {p_{p_{p_1}}}^{p_1} \)

    No information is lost by dropping the terminal 1s. Thus we may write the following form.

    \[ 2025 = {p_p}^{p^p} {p_{p_p}}^p \]

    The article linked below tells how forms of that sort correspond to a family of digraphs called “riffs” and a family of graphs called “rotes”. The riff and rote for 2025 are shown in the next two Figures.

    Riff 2025
    inquiryintoinquiry.files.wordp

    Rote 2025
    inquiryintoinquiry.files.wordp

    Reference —

    Riffs and Rotes
    oeis.org/wiki/Riffs_and_Rotes

    #Arithmetic #Combinatorics #Computation #Factorization #GraphTheory #GroupTheory
    #Logic #Mathematics #NumberTheory #Primes #Recursion #Representation #RiffsAndRotes

  3. Riffs and Rotes • Happy New Year 2023
    inquiryintoinquiry.com/2023/01

    \( \text{Let} ~ p_n = \text{the} ~ n^\text{th} ~ \text{prime}. \)

    \( \text{Then} ~ 2023=7\cdot{17}^2=p_{4}p_{7}^2=p_{{p_1}^{p_1}}p_{p_4}^{p_1} =p_{{p_1}^{p_1}}p_{p_{{p_1}^{p_1}}}^{p_1} \)

    No information is lost by dropping the terminal 1s. Thus we may write the following form.

    \[ 2023=p_{p^p} p_{p_{p^p}}^p \]

    Forms like these correspond to a family of #Digraphs called #Riffs and a family of #Graphs called #Rotes.

    #GraphTheory #NumberTheory #Primes #PrimeNumbers #RiffsAndRotes