Why did it take us 50 years since the birth of the quantum mechanical formalism to discover
that unknown quantum states cannot be cloned? Yet, the proof of the 'no-cloning theorem'is …

This paper has two tightly intertwined aims:(i) to introduce an intuitive and universal
graphical calculus for multi-qubit systems, the ZX-calculus, which greatly simplifies …

So far, most of the literature on (quantum) contextuality and the Kochen–Specker theorem
seems either to concern particular examples of contextuality, or be considered as quantum …

This book aims to synthesize different directions in knowledge studies into a unified theory of
knowledge and knowledge processes. It explicates important relations between knowledge …

The foundations of Quantum Mechanics are experiencing a golden age. In a timespan of
less than two decades, an astonishing number of new results, ideas, and frameworks have …

A reconstruction of quantum theory refers to both a mathematical and a conceptual
paradigm that allows one to derive the usual formulation of quantum theory from a set of …

14 a prehistory of n-categorical physics just categories and bicategories). We also include a
review of some relevant aspects of twentieth-century physics. The most obvious roads to n …

Can we prove the necessity of our best physical theories by rational means, without appeal
to experience? This book recounts a few ingenious attempts to derive physical theories by …

There are different meanings of the term “compositionality” within science: what one
researcher would call compositional, is not at all compositional for another researcher. The …

In this work we build a quantum logic that allows us to refer to physical magnitudes
pertaining to different contexts from a fixed one without the contradictions with quantum …