@tg9541 @bookstodon @philosophy

yes, agree in a way. but do not see a win in playing off those two against each other, as later (after their common work PM) their work developed rather independently in more or less complementary areas, sometimes overlapping in #PhilSci topics.

E.g., if one focusses in #philosophy first of all on questions of #ontology (of science), ANW's process ontology will be much more impressive than say the duplicating entities of logical constructs in 'logical atomism' (which imop is a late and needless sin of BR).

If, on the other hand, the main focus is #logic and logic related
#epistemology and/or #PhilMath, there is roughly anything deeper and more worth considering than the theory of incomplete symbols; and perhaps no more careful and penetrating study than the ramified theory of types as developed from the circulus vitiosus argument, even when this theory was abandoned in the sequel for independent reasons.

#philsci
#philmath
#epistemology
#PhilosophyOfLogic

happy to have my most current research paper now approved as a fixed preprint at Cambridge Open Engage

https://www.cambridge.org/engage/coe/article-details/67063c69cec5d6c142aac4e0

objects are (not) ...

... try to explore, what properties objects are presupposed to have, in order to enter the universe of discourse of an interpreted formalized language. First I review Frege′s analysis of the logical structure of truth value definite sentences of scientific colloquial language, to draw suggestions from his saturated vs. unsaturated sentence components paradigm. Next try investigate, in how far reference to non pure math objects might allow for a role as argument of a truth value function. Object kinds to be considered are: common sense objects, technical objects, humanities object kinds (social, psychical, ...), objects of art, ... , be they abstract, concrete, or in this respect mixed objects. Then have a comment on the just referenced label abstract objects. Next try to get an idea wrt the ontological significance of the fact, that pure math objects and functions in some important classical cases can be uniquely defined by means of categorical theories. Here, in the course of my argument, I have a little corollary wrt the standard model of first order Peano arithmetic, reducing the epistemological significance of the existence of the non standard models. Next, wrt a special concept of a formalized empirical theory, I care for whether the impure math objects and mixed objects described here, and complying best with truth value function mapping, are also reliable candidates for the ontological commitment of such theories; and discuss an alternative, which reduces the ontological significance of the universe of discourse of the theories intended models. -finis

Cambridge Open Engage

For an example in a #PhilMath paper, I'm looking into this sum:
Sum[(-1)^(l + 1) 2^2^l, {l, 0, k}] for odd k.
It diverges fast & I have values for k up to 9, but I'm wondering if there exists a closed form for it. I tried some techniques from Concrete Mathematics (to no avail) and Wolfram Alpha exceeded computation time. Probably I shouldn't expect a closed form due to the iterated exponent.

Suggestions? Or could someone check it for me in Mathematica, please? 💡➕   #ICanHazSums

my current (still draft) paper is about

object references in purportedly truth value definite sentences

think there's something good in it ...
😅 #nontology

#PhilosophyOfLogic
#AppliedLogic
#PhilMath
#PhilSci
#PhilosophyOfMathematics
#PhilosophyOfScience

https://philarchive.org/rec/GRAOAN

Friedrich Wilhelm Grafe, Objects are (not) ... - PhilArchive

My goal in this paper is, to tentatively sketch and try defend some observations regarding the ontological dignity of object references, as they may be used from within in a formalized ...

to whom it concerns

#PhilMath
#logic
#SetTheory
#PartialOrders

@philosophy
@Jose_A_Alonso

taken from the birdsite:
J D Hamkins today points to an imop philosophically interesting discussion about the role of Zorn's lemma at

https://mathoverflow.net/questions/436346/zorns-lemma-old-friend-or-historical-relic/

Zorn's lemma: old friend or historical relic?

It is often said that instead of proving a great theorem a mathematician's fondest dream is to prove a great lemma. Something like Kőnigs tree lemma, or Yoneda's lemma, or really anything from thi...

MathOverflow
@hkraghs: the philosophy of mathematical practice can push the development of machine learning methods #MachineLearning #DS2conf #DigititalHumanities #PhilMath #mathematics #mathpractice
Last talk of the day with a mind-blowing combo in the title: digital humanities and the philosophy of mathematical practice, will be delivered by Henrik Kragh Sørensen (University of Copenhagen, @hkraghs). #DS2conf #DigititalHumanities #PhilMath #mathematics #mathpractice
Day 2 of the 66th Conference on the History of Logic has just started. Thread below. Join us online for talks in English and Polish: https://asamonek.github.io/events/2020/10/28/khl-66.html
#logic #history #mathematics #computability #machinelearning #systems #philmath
66th Conference on the History of Logic (LXVI Konferencja Historii Logiki) in Kraków, Poland

Oficjalna strona konferencji: https://filozofia.uj.edu.pl/khl

66th Conference on the History of Logic is today (and tomorrow) at 10:00-14:00 CET. Join us online for talks in English and Polish: https://asamonek.github.io/events/2020/10/28/khl-66.html
#logic #history #mathematics #computability #machinelearning #systems #philmath
66th Conference on the History of Logic (LXVI Konferencja Historii Logiki) in Kraków, Poland

Oficjalna strona konferencji: https://filozofia.uj.edu.pl/khl