Monthly Archives: November 2017

Peirce’s 1903 Lowell Lectures • Comment 9

Posted on November 28, 2017 by Jon Awbrey

Re: Peirce List • John Sowa JFS: In 1911, Peirce clarified [the] issues by using two distinct terms:  ‘the universe’ and ‘a sheet of paper’.  The sheet is no longer identified with the universe, and there is no reason why one couldn’t or … Continue reading →

Posted in C.S. Peirce, Diagrammatic Reasoning, Graph Theory, Laws of Form, Logic, Logical Graphs, Mathematics, Peirce, Peirce List, Propositional Calculus, Propositional Equation Reasoning Systems, Spencer Brown, Visualization | Tagged , , , , , , , , , , , , | Leave a comment

Peirce’s 1903 Lowell Lectures • Comment 8

Posted on November 26, 2017 by Jon Awbrey

Cf: Laws Of Form Discussion • JA Re: Laws Of Form Discussion • JB Re: Peirce List Discussion • JA Many aspects of Peirce’s alpha graphs can be clarified by seeing how they relate to the corresponding Venn diagrams. In … Continue reading →

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Peirce’s 1903 Lowell Lectures • Comment 7

Posted on November 25, 2017 by Jon Awbrey

Cf: Laws Of Form Discussion • JA Re: Peirce List Discussion • JA I’ll go ahead and copy out the first part of the article on Logical Implication, as I find I am still pleased with all I was able … Continue reading →

Posted in C.S. Peirce, Diagrammatic Reasoning, Graph Theory, Laws of Form, Logic, Logical Graphs, Mathematics, Peirce, Peirce List, Propositional Calculus, Propositional Equation Reasoning Systems, Spencer Brown, Visualization | Tagged , , , , , , , , , , , , | Leave a comment

Peirce’s 1903 Lowell Lectures • Comment 6

Posted on November 24, 2017 by Jon Awbrey

Cf: Laws Of Form Discussion • JA Continuing discussion of the conditional form, as expressed in Peirce’s logical graphs under the existential interpretation, incited me to cite one of my own essays on the subject. Re: Peirce List Discussions • … Continue reading →

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The Difference That Makes A Difference That Peirce Makes : 19

Posted on November 18, 2017 by Jon Awbrey

Re: Peirce List Discussion • John Sowa Peirce uses the word “formal” in a sense that gives it normative force.  It is this sense in which he defines logic as formal semiotic. But taking “formal” in a normative sense weighs against … Continue reading →

Posted in C.S. Peirce, Descriptive Science, Formal Languages, Inquiry, Logic, Logic of Relatives, Logical Graphs, Mathematics, Normative Science, Peirce, Pragmatism, Relation Theory, Semiotics, Sign Relations, Triadic Relations | Tagged , , , , , , , , , , , , , , | 1 Comment

Peirce’s 1903 Lowell Lectures • Comment 5

Posted on November 16, 2017 by Jon Awbrey

The World of Ā Cf: Laws Of Form Discussion • JA The relationship between classical and non-classical logic is a topic that comes up from time to time in these discussions.  Inquiry into it tends to take a different tack … Continue reading →

Posted in C.S. Peirce, Diagrammatic Reasoning, Graph Theory, Laws of Form, Logic, Logical Graphs, Mathematics, Peirce, Peirce List, Propositional Calculus, Propositional Equation Reasoning Systems, Spencer Brown, Visualization | Tagged , , , , , , , , , , , , | Leave a comment

Peirce’s 1903 Lowell Lectures • Comment 4

Posted on November 12, 2017 by Jon Awbrey

Cf: Laws Of Form Discussion • JA A couple of comments in response to questions about the relationship between Spencer Brown’s Laws of Form and the broader scope of Peirce’s Logical Graphs. Re: Peirce List Discussion • HR George Spencer Brown … Continue reading →

Posted in C.S. Peirce, Diagrammatic Reasoning, Graph Theory, Laws of Form, Logic, Logical Graphs, Mathematics, Peirce, Peirce List, Propositional Calculus, Propositional Equation Reasoning Systems, Spencer Brown, Visualization | Tagged , , , , , , , , , , , , | 1 Comment

Peirce’s 1903 Lowell Lectures • Comment 3

Posted on November 10, 2017 by Jon Awbrey

Cf: Laws Of Form Discussion • JA Peirce’s use of the “scroll” as a graphical syntax for implication continued to raise many questions at this point in the Peirce List reading.  I think a lot of what bothers people has … Continue reading →

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Peirce’s 1903 Lowell Lectures • Comment 2

Posted on November 8, 2017 by Jon Awbrey

How Logic Got Its Blots Cf: Laws Of Form Discussion • JA Taking positive implication as a basic construct, as Peirce does in the lectures at hand, one has to find a way to rationalize the introduction of negative concepts, … Continue reading →

Posted in C.S. Peirce, Diagrammatic Reasoning, Graph Theory, Laws of Form, Logic, Logical Graphs, Mathematics, Peirce, Peirce List, Propositional Calculus, Propositional Equation Reasoning Systems, Spencer Brown, Visualization | Tagged , , , , , , , , , , , , | Leave a comment

Pragmatic Traction • 7

Posted on November 8, 2017 by Jon Awbrey

Re: Peirce List • John Sowa It’s good to remember that observation, perception itself, has an abductive character in Peirce’s analysis and induction for him is more a final testing than initial conception stage.  Yes, it’s wheels upon wheels but … Continue reading →

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