CTAN update: qworld
This update introduces minor feature enhancements and rendering refinements for the QWorld package. Color annotations have been extended to key diagrammatic elements: - The CAP and CUP structures now support the frame color attribute, allowing identity wires to reflect object-specific colors. - The BRAIDING structure now provides L color and R color options for independently coloring the left and right strands. In addition, the rendering of curves has been improved for greater clarity and smoother visual output. These enhancements contribute to improved diagrammatic readability and refined visual quality.
This package is located at https://mirrors.ctan.org/graphics/pgf/contrib/qworld More information is at https://www.ctan.org/pkg/qworld
Thanks for the upload. For the CTAN Team Manfred Lotz CTAN is run entirely by volunteers and supported by TeX user groups. Please join a user group or donate to one, see https://ctan.org/lugs .
QWorld – Drawing string diagrams for monoidal categories and quantum theory in TeX
This LaTeX package has been designed for the typesetting of graphical languages grounded in monoidal category theory and its extensions. It provides a declarative, LaTeX-native interface for rendering string diagrams, eliminating the need for any external graphics software or manual image management.
The package supports a wide spectrum of categorical structures frequently encountered in categorical quantum mechanics, algebraic structures, and diagrammatic reasoning, including but not limited to:
- Monoidal and symmetric monoidal categories
- Dual objects and pivotal / rigid categories
- Dagger categories
- Frobenius algebras and Hopf algebras
- Braided, balanced, and ribbon categories
Internally, QWorld builds upon the TikZ graphics framework, but introduces a domain-specific layer of abstraction that aligns diagram syntax closely with categorical semantics. This design facilitates accurate and transparent visual representations of morphisms, tensor products, and composition, thereby supporting both formal exposition and pedagogical use.
QWorld is intended for researchers and educators working in categorical logic, quantum foundations, topological quantum field theory (TQFT), and related domains where graphical calculi constitute an essential mode of reasoning.
| Package | QWorld |
| Version | 1.1.2 |
| Copyright | 2025 Niina Ryota |
| Maintainer | Niina Ryota |