Robert, List,Thank you for the challenge! As I have understood Gary, I may post this second post of today, because it is an answer. I hope, this is so?First: I finally have accepted, that e.g. the object is a correlate, and the sign´s relation with it is a relation, and both are different things. Thanks to you and Jon. I´m a bit ashamed I had been reluctant to see this before.Now to my so-called trichotomy (composition, involvation, classification). At the very end there may be a little bug in it, and there also are some questions (see the question marks). Now it only is about the classification of signs (signs table, ten classes):The classification of signs involves two kinds of involvation, by looking at the signs table: The vertical and the horizontal kind. The vertical involvement comes from the fact, that a legisign involves sin-, which then involve qualisigns, a symbol involves indices, then icons, an argument involves dicents, then rhemes (I use the plural, without claiming, just guessing, that it is more than one, otherwise the text gets too long). Now, if the sign is e.g. a rhematic indexical legisign, it should involve (some? all? How many of each?) signs, that may be built of the elements involved (above the sign in the table): Rhematic indexical sinsign, rhematic iconical sinsign, (rhematic iconical) qualisign.Horizontal involvation comes from the fact, that a sign involves a relation with its object, and a relation with its interpretant. This is involvation, not composition, linguistically adressed by adjectives (the "...tic" or "....al" of e.g. "rhematic" or "indexical").So, this was, how classification involves involvation. Now, how does involvation involve composition? The fact, that a sign always involves its relation with an object and with an interpretant, means, that there is an irreducible correlation between sign, object, and interpretant. This correlation is a composition: Sign, object, and interpretant make the irreducible sign triad. As I wrote, there may be a little bug here: I have called a conclusion an involvation,, not really knowing, if that is ok.What also may be argued, is, that composition might be seen as a kind of involvation, then there would not be a categorial distinction. That is a problem, I don´t know yet, whether it is terminological or conceptual.Best, Helmut23. Oktober 2025 um 16:54"robert marty" <[email protected]>wrote:Helmut, List,
You asked the question “What is a trichotomy?” a few days ago on another thread; I replied on October 21, 2025, at 10:22 a.m., giving you Peirce's precise definition when he trichotomizes the sciences in order to classify them; here it is:
It turns out that in most cases the divisions are trichotomic; the First of the three members relating to universal elements or laws, the Second arranging classes of forms and seeking to bring them under universal laws, the Third going into the utmost detail, describing individual phenomena and endeavoring to explain them. (An Outline Classification of the Sciences, CP 1.180; EP2: 258)Note: First, Second, and Third are ordinals!
So, a formal definition, applicable in all circumstances, would be something like:
A trichotomy is a tripartite division of a phaneron into three parts defined by the natures of the elements it contains, each of which is characterized by one of the three classes: Thirdness, Secondness, and Firstness. It follows that, since these categories are interdependent and verify relations of involvement a priori, then the elements with which each part is associated (which, for convenience, I call, as Peirce was, the fact, respectively, Tertians, Secondans, and Primans) must be such that Tertians govern Secondans, whose existence is by definition presupposed, and also Primans, which, by their definition, only exist when incarnated in Secondans.
Consequently, if you claim that a triad of concepts is a trichotomy, you must show that they meet these conditions. The three classes must be included, and the elements contained in each must be related by involvement. Your opinion is not enough, and you cannot leave it to your readers to verify this. It is up to you to prove it...
Best regards,
Robert Marty
Honorary Professor ; PhD Mathematics ; PhD PhilosophyLe jeu. 23 oct. 2025 à 12:21, Helmut Raulien <[email protected]> a écrit :Jon, Robert, List,to me, the relations between categorial entities become clearer by classifying them with the trichotomy "composition, involvement, classification" (Maybe this trichotomy is better than "composition, determination, classification", I had proposed before, or maybe involvement is a kind of determination). With composition I mean a complete and irreducible one. Classification may also be called specification or subsumption (Salthe).The triad "sign, object, interpretant" is a composition. "immediate object, dynamical object" is a composition, these two make the object. The trichotomy "rheme, dicent, argument" is a classification. A dicent involves rhemes, but is not composed of them, because they donot make it. For having a dicent, their order too is necessary, which information is in the dicent. Same with argument: Peirces example with the beans in a bag shows, that according to the order of dicents (propositions) in the argument, you have either an abduction, an induction, or a deduction (or nonsense, if the order is weird).A symbol involves indexes, which involve icons, a legisign involves sinsigns, which involve qualisigns.I think, that the three interpretants too are a composition, they together make the interpretant. But then I´d have to claim, that every interpretant consists of these three parts. The final inerpretant may be vague or an anticipation for a long time, but should exist from the beginning in some way.Best, Helmut
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