كتابة المفاهيم (Begriffsschrift)

مقدمة

Frege, then a 30-year-old lecturer in Jena, published this booklet of under a hundred pages in Halle in 1879. Its subtitle calls it a formula language of pure thought modelled on that of arithmetic. Instead of the traditional analysis into subject and predicate, it analyses sentences into function and argument, introduces a sign for generality – the quantifier – and writes conditionals and negation in a two-dimensional notation of strokes. On this basis Frege sets out the first fully formal system of quantificational logic, and in the third part defines what it means for one item to follow another in a series. Reviewers found the notation cumbersome; its importance was recognised only decades later, largely through Russell.

الصلات

ينتقد

• أورغانوننحو 350 ق.م · أرسطو

جرى تناوله في

• الإحساس والمرجعية1892 · غوتلوب فريغه
• مبادئ الرياضيات1910 · بيرتراند راسل
• مصنف منطقي فلسفي1921 · لودفيغ فيتغنشتاين

مزيد من أعمال غوتلوب فريغه

• 1884أسس الحساب (Die Grundlagen der Arithmetik)
• 1892الإحساس والمرجعية

يرد في

• رحلة «المنعطف اللغوي» · المحطة 1 من 10