| ||||
| ||||
![]() Title:The Square of Opposition: Four Colours Sufficient for the “Map” of Logic from the “Four-Colours Theorem” to the “Four-Letters Theorem” Authors:Vasil Penchev Tags:four-color theorem, four-letter theorem and square of opposition Abstract: One can ask the fllowing questions questions to the title. Why square? Why four? What is the common in the following facts? The Square of Opposition: Four Colours Sufficient for the “Map” of Logic from the “Four-Colours Theorem” to the “Four-Letters Theorem” ![]() The Square of Opposition: Four Colours Sufficient for the “Map” of Logic from the “Four-Colours Theorem” to the “Four-Letters Theorem” | ||||
Copyright © 2002 – 2025 EasyChair |