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  • Mathematicians are a bit strange ..

    From Peter Fairbrother@21:1/5 to All on Thu Jan 16 01:44:42 2025
    Or so they say.

    I have known two mathematicians well, one was my teacher - who often
    said that infinity was not a number, it was a place - but who hit his
    wife over the head with a frying pan and killed her.

    The other was a university friend who got annoyed one day when he
    couldn't open his door and punched it, breaking his hand in many places
    and taking the door, frame and all, down.

    I digress. I write to ask, what is the ?Greek? letter which looks like a
    small p or Greek rho with the stem extended upwards? You see it on
    blackboards mostly.

    Thanks

    Peter Fairbrother

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  • From James Waldby@21:1/5 to James Waldby on Thu Jan 16 06:47:18 2025
    James Waldby <[email protected]> wrote:
    Peter Fairbrother <[email protected]> wrote:

    Or so they say.
    [snip]
    I digress. I write to ask, what is the ?Greek? letter which looks like a
    small p or Greek rho with the stem extended upwards? You see it on
    blackboards mostly.

    I'm not recognizing that description as among Greek letters ... is it
    in charts at either of the following? <https://en.wikipedia.org/wiki/Greek_alphabet> <https://en.wikipedia.org/wiki/Greek_script_in_Unicode>

    However I'm reminded of thorn (without stroke), as seen at eg <https://en.wikipedia.org/wiki/Thorn_(letter)>

    At the end of the Greek_script link, there's a character looking like
    thorn. See "Greek Capital Letter Sho" or san pages <https://en.wikipedia.org/wiki/Sho_(letter)> and <https://www.compart.com/en/unicode/U+03F7>

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  • From James Waldby@21:1/5 to Peter Fairbrother on Thu Jan 16 06:37:16 2025
    Peter Fairbrother <[email protected]> wrote:

    Or so they say.
    [snip]
    I digress. I write to ask, what is the ?Greek? letter which looks like a small p or Greek rho with the stem extended upwards? You see it on blackboards mostly.

    I'm not recognizing that description as among Greek letters ... is it
    in charts at either of the following? <https://en.wikipedia.org/wiki/Greek_alphabet> <https://en.wikipedia.org/wiki/Greek_script_in_Unicode>

    However I'm reminded of thorn (without stroke), as seen at eg <https://en.wikipedia.org/wiki/Thorn_(letter)>

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  • From Moebius@21:1/5 to All on Thu Jan 16 07:59:00 2025
    Am 16.01.2025 um 02:44 schrieb Peter Fairbrother:

    [...] I write to ask, what is the ?Greek? letter which looks like a
    small p or Greek rho with the stem extended upwards? You see it on blackboards mostly.
    A "d"?

    Like in "dx/dy"?

    Or maybe a related, symbol: https://de.wikipedia.org/wiki/%E2%88%82

    ∂

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