May 28, 1936

Alan Turing submitted his groundbreaking paper 'On Computable Numbers, with an Application to the Entscheidungsproblem,' which laid the foundation for computer science with the concept of the Turing machine.


Cambridge, United Kingdom | University of Cambridge

Watercolor painting based depiction of Alan Turing submitted his groundbreaking paper 'On Computable Numbers, with an Application to the Entscheidungsproblem,' which laid the foundation for computer science with the concept of the Turing machine. (1936)

Alan Turing’s Groundbreaking Paper Submission: 28 May 1936

On 28 May 1936, Alan Turing, a young mathematician at the time, submitted his seminal paper titled “On Computable Numbers, with an Application to the Entscheidungsproblem” to the Proceedings of the London Mathematical Society. This paper laid the essential groundwork for what would eventually become the field of computer science, introducing concepts that were revolutionary for both theoretical and practical computation.

Context and Leading Events

In the early 20th century, mathematicians were grappling with questions related to the foundations of mathematics and computation. One significant problem was David Hilbert’s Entscheidungsproblem, or “decision problem,” which asked whether there existed a systematic method to determine the truth or falsity of all mathematical propositions. Turing tackled this problem directly, drawing on earlier work in mathematical logic by figures like Kurt Gödel.

Key Contributions of the Paper

Turing Machine

Turing introduced the concept of the “Turing machine,” an abstract computational model capable of simulating any algorithm. This theoretical construct is now fundamental to understanding the limits of what can be computed, acting as a baseline for defining what it means for a function or number to be “computable.”

Impact on Entscheidungsproblem

Through his paper, Turing demonstrated that there is no general solution to the Entscheidungsproblem. He showed that some problems are undecidable, meaning there is no algorithm that can determine truth values for all propositions in general.

Broader Significance

Turing’s work was transformative. It provided the foundation for the later development of real computers, influencing how future generations of scientists and engineers would think about computation. His ideas directly impacted the design and function of modern computing systems and contributed to significant advancements in fields as varied as cryptography and artificial intelligence.

Aftermath and Legacy

Turing’s insights gained him a lasting place in the history of mathematics and computer science. The Turing machine concept remains central to theoretical computer science, influencing both academic thought and practical developments. His work paved the way for the digital revolution and has had an enduring impact on technology and society.

Turing’s intellect and vision in this paper set the course for numerous technological advancements and laid the groundwork for the information technology-driven world we experience today. His legacy is preserved through continued study and admiration of his pioneering work, particularly this seminal 1936 paper.