• Fine Doubter
    200
    I've been trying to look into why models / modelling / model theory let us down (I suspect it is because they are being misused) and I got hold of Burrow & Walsh, Philosophy and model theory, Oxford, 2018. Every here and there I find a "juicy" philosophical bit, which sets me off.

    The authors won't admit to pushing "internalism", which seems to be about inference yet it is stated that it is free of "semantics".

    My own instincts lie in semiotics, phenomenology, and the kind of reasoning (which I have been calling "inference") which I find in Jevons, Thouless, or books cowritten by Fosl.

    To my mind "semantics" as a word means the exact opposite to its apparent specialised meaning in "formal logic".

    Would I be right in thinking that cross checking "logic" by actual inference is likely to produce fairly reliable results because it is often not too vast in scale to fall greatly foul of Godel's incompleteness theorem?

    Do professional "formal logic" practitioners think the general public wouldn't be interested and that a strange notation has to be denoted the sole entry point (and to what we might ask)? Do they think it wouldn't be good to simultaneously paraphrase as they go along, not only to inspire newcomers, but as a cross check for themselves?

    I know abstracts are abstract, but they are still kinds of things. When I read string theory books or recursion books, there are lovely pictures of the topology I was always so fond of as an infant (with no-one to help me then), but not in "logic" books, where they would be equally appropriate.

    Why do authorities underestimate the intelligence and flair of outsiders and then complain there aren't enough takers for science and maths studies?

    (Incidentally I now call "universals" an intermediate level of "object" - of beholding - between "primary" and "secondary objects".)
  • javi2541997
    5.9k


    Why do authorities underestimate the intelligence and flair of outsiders and then complain there aren't enough takers for science and maths studies?

    I made to myself this question plenty of times. I do not understand why they are so sticky in their arguments either. Probably they feel anxious if they new generations can take their positions or something. This is one of the objects I really missed in our modern education system: flexibility and the aim to motivate the outsiders. I feel that the ancient principle of "the disciple can surpass the master" is tumbling down. You are speaking about maths and science but somehow this applies to all academic areas.

    but not in "logic" books, where they would be equally appropriate.

    Do you think this should be more attractive or eye catching?
  • Fine Doubter
    200
    Some old fashioned books would even have Venn diagrams, with a little commentary / labelling: you can show a lot of ifs and buts on those. The latest "thinking" in all areas is too open-and-shut. And didn't Lewis Carroll make maths and logic entertaining?
  • bongo fury
    1.7k


    What are you calling "internalist"? Just curious.

    2
  • apokrisis
    7.3k
    C.S. Peirce had the ambition of refounding logic on a graphical basis - https://en.wikipedia.org/wiki/Existential_graph

    And Spencer Brown had a similar leaning with his laws of form - https://en.wikipedia.org/wiki/Laws_of_Form

    Louis Kauffman has written a number of fine papers that give a historical overview of this more visual tradition in logic - https://www.ingentaconnect.com/content/imp/chk/2011/00000018/F0020001/art00004

    Is that the kind of thing you are looking for?
  • Fine Doubter
    200
    It's a word Burrow & Walsh use. I got the impression they thought their bosses wouldn't want them to spell it out! :nerd:
  • bongo fury
    1.7k


    Still intrigued. All I get from Google is a jewellers in Tunbridge Wells.
  • Fine Doubter
    200
    Sorry. I'll give you a page reference later on, and shall see if they cite literature on it. Thank you for training me in good habits. :yikes:
  • Fine Doubter
    200
    This is in chapter 10, pp 224-250 of Tim Button & Sean Walsh, Philosophy and model theory, Oxford 2018. Typical footnotes refer to:

    - Vaananen J and T Wang, 'Internal categoricity in arithmetic and set theory' in Notre Dame Journal of Formal Logic, 56.1, pp 121-34

    - Potter M, Set theory and its philosophy, Oxford 2004

    Depending how close to or far from Dedekind one wanted to get (apparently).

    I haven't looked those two pieces of literature cited up yet, I am looking for icing and marzipan in Button & Walsh like the dutiful child confronted with the canonical but fearsome Christmas "cake".

    I am determined to fight my way into this field: they can't wall me out!

    Another book sometimes referenced by Button & Walsh is Hrbacek K and T Jech, Introduction to set theory, 3 rd ed, Dekker 1999.

    I don't want to get hold of Potter or Hrbacek only then to be told I still need a degree in maths before I start. Do any readers have experience of those two texts? I suppose periodical articles tend to be very technical and I don't know how to get hold of them?
  • unenlightened
    9.2k
    And didn't Lewis Carroll make maths and logic entertaining?Fine Doubter

    If you want entertaining logic, Raymond Smullyan is hard to beat.

    Here's one to whet your appetite: http://www.logic-books.info/sites/default/files/lady-or-the-tiger-and-other-logic-puzzles.pdf
  • Fine Doubter
    200
    I like:
    - that many of the answers will remain incomplete or even almost completely unknown, due to too few clues
    - that you often have to change the sequence in which you attend to issues, and not deal with them in the order someone told you to (I think I'll suggest that on the theism thread)
    - the sentiments in the epilogue
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