# Category Archives: Frankl Conjecture

## Differential Logic • 7

Differential Expansions of Propositions Panoptic View • Enlargement Maps The enlargement or shift operator exhibits a wealth of interesting and useful properties in its own right, so it pays to examine a few of the more salient features playing out … Continue reading

## Differential Logic • 6

Differential Expansions of Propositions Panoptic View • Difference Maps In the previous section we computed what is variously described as the difference map, the difference proposition, or the local proposition of the proposition at the point where and In the universe … Continue reading

## Differential Logic • 5

Differential Expansions of Propositions Worm’s Eye View Let’s run through the initial example again, keeping an eye on the meanings of the formulas which develop along the way.  We begin with a proposition or a boolean function whose venn diagram … Continue reading

## Differential Logic • 4

Differential Expansions of Propositions Bird’s Eye View An efficient calculus for the realm of logic represented by boolean functions and elementary propositions makes it feasible to compute the finite differences and the differentials of those functions and propositions. For example, … Continue reading

## Differential Logic • 3

Cactus Language for Propositional Logic Table 1 shows the cactus graphs, the corresponding cactus expressions, their logical meanings under the so-called existential interpretation, and their translations into conventional notations for a sample of basic propositional forms. Table 1.  Syntax and … Continue reading

## Differential Logic • 2

Cactus Language for Propositional Logic The development of differential logic is facilitated by having a moderately efficient calculus in place at the level of boolean-valued functions and elementary logical propositions.  One very efficient calculus on both conceptual and computational grounds … Continue reading

## Differential Logic • 1

Introduction Differential logic is the component of logic whose object is the description of variation — for example, the aspects of change, difference, distribution, and diversity — in universes of discourse subject to logical description.  A definition that broad naturally … Continue reading

## Differential Logic • Overview

The previous series of blog posts on Differential Propositional Calculus brought us to the threshold of the subject without quite stepping over but I wanted to lay out the necessary ingredients in the most concrete, intuitive, and visual way possible … Continue reading

## Survey of Differential Logic • 2

This is a Survey of blog and wiki posts on Differential Logic, material I plan to develop toward a more compact and systematic account. Elements Differential Logic • Introduction Differential Logic • Part 1 • Part 2 • Part 3 … Continue reading

## Survey of Differential Logic • 1

This is a Survey of blog and wiki posts on Differential Logic, material I plan to develop toward a more compact and systematic account. Elements Differential Logic • Introduction Differential Propositional Calculus • Part 1 • Part 2 Differential Logic … Continue reading