Re: [PEIRCE-L] Pragmatic Semiosis and Mathematical abduction

2021-08-14 Thread John F. Sowa


Gary F and Jerry,

A computer theorem prover that generates all
possibilities and
systematically eliminates (by deduction) the ones
that generate
contradictions could be called an abduction machine.

GF:  In the present context, this would imply that abduction is
essentially mathematical, or at least that inquiry begins in the
hypothetical realm.

JLRC:  Abduction is necessary for
calculating the number of possible
arrangements IN SPACE of the parts
of the whole.  Statistically, it
generates the potential arrangements
in space.  This mathematical
calculation of abduction is a logical
function of the indices of
sin-sign.

I agree with both of
you.

But there's a difference between a machine and a
well-informed human:
The human uses insight (Thirdness) that can
drastically reduce the
blind search time.  For small finite cases,
the blind search by the
computer can be far faster than the
intelligent human.  But humans
can outperform computers in searches
through large or even infinite
spaces.

Example: 
Self-driving cars outperform humans on limited-access
highways where
the computer has been trained on nearly all the options
that might
occur.  But the average human is better in recognizing
unusual cases
on city streets where the number of possibilities is
immense.

In any case, this is just one of many cases where it's essential
to
distinguish (a) mathematics as the infinite totality of all
patterns
and teories about them, (b) the people who discover
mathematical
theories, and (c) the application of mathematics in
other theoretical
and practical sciences.

John
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Re: [PEIRCE-L] Semiotics, Semiosis, Sign Relations

2021-08-14 Thread Jon Awbrey

Cf: Semiotics, Semiosis, Sign Relations • Discussion 10
https://inquiryintoinquiry.com/2021/08/14/semiotics-semiosis-sign-relations-discussion-10/

Re: Semiotics, Semiosis, Sign Relations • Discussion 8
https://inquiryintoinquiry.com/2021/08/13/semiotics-semiosis-sign-relations-discussion-8/

Re: Category Theory
https://categorytheory.zulipchat.com/#narrow/stream/233104-theory.3A-logic/topic/sign.20relations
::: Morgan Rogers
https://categorytheory.zulipchat.com/#narrow/stream/233104-theory.3A-logic/topic/sign.20relations/near/249456735

 Please clearly state at least one “distinctive quality of sign 
relations”. 

Dear Morgan,

Sign relations are triadic relations.

Can any triadic relation be a sign relation?

I don’t know.  I have pursued the question myself whether any
triadic relation could be used somehow or other in a context
of communication, information, inquiry, learning, reasoning,
and so on where concepts of signs and their meanings are
commonly invoked — there’s the rub — it’s not about what
a relation is “intrinsically” or “ontologically” at all
but a question of “suitability for a particular purpose”
as they say in all the standard disclaimers.

What Peirce has done is to propose a definition intended to capture an
intuitive, pre-theoretical, traditional concept of signs and their uses.
To put it on familiar ground, it’s like Turing’s proposal of his namesake
machine to capture the intuitive concept of computation.  That is not a
matter to be resolved by à priori dictates but by trying out candidate
models in the intended applications.

I gave you what I consider Peirce’s best definition of a “sign”
in relational terms and I pointed out where it needs filling out
to qualify as a proper mathematical definition, most pointedly in
the further definitions of “correspondence” and “determination”.

That is the current state of the inquiry as it stands at this site …

Regards,

Jon
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Re: [PEIRCE-L] Semiotics, Semiosis, Sign Relations

2021-08-14 Thread Jon Awbrey

Cf: Semiotics, Semiosis, Sign Relations • Discussion 9
http://inquiryintoinquiry.com/2021/08/14/semiotics-semiosis-sign-relations-discussion-9/

Re: Category Theory
https://categorytheory.zulipchat.com/#narrow/stream/233104-theory.3A-logic/topic/sign.20relations
::: Morgan Rogers
https://categorytheory.zulipchat.com/#narrow/stream/233104-theory.3A-logic/topic/sign.20relations/near/248952679


Okay, I may have mixed up the meanings of “object” and “interpretant”
in my plain language translations above?  Re determination, I read
“B is determined by A” as meaning the conjunction of

∀a ∈ A, ∃b ∈ B, ∃c ∈ C, R(a,b,c)

and

∀a ∈ A, ∀c ∈ C, R(a,b,c) ∧ R(a,b',c) ⇒ b = b' ?

Whether this is right depends on the answers to my previous questions.


Dear Morgan,

Let's look at the gloss I gave for Determination under the Definition
( https://oeis.org/wiki/Sign_relation#Definition )  of a Sign Relation
( https://oeis.org/wiki/Sign_relation ).

• Determination.  Peirce's concept of determination is broader in several
  directions than the sense of the word that refers to strictly deterministic
  causal-temporal processes.  First, and especially in this context, he is
  invoking a more general concept of determination, what is called a formal
  or informational determination, as in saying “two points determine a line”,
  rather than the more special cases of causal and temporal determinisms.
  Second, he characteristically allows for what is called “determination in
  measure”, that is, an order of determinism that admits a full spectrum of
  more and less determined relationships.

Other words for this general order of determination are structure,
pattern, law, form, and one coming up especially in cybernetics and
systems theory, constraint.  It's what happens when not everything
that might happen actually does.  (The stochastic mechanic or the
quantum technician will probably quip at this point, “At least,
not with equal probability.”)

Regards,

Jon
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