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	Paper	Title	Authors	Audience
	P3045R9	Quantities and units library	M. Pusz, D. Berner, J. Peña, C. Hogg, N. Holthaus, R. Michaels, V. Reverdy	LEWG SG16
Mailing Date 2026-07 Post-Brno Author(s) Mateusz Pusz, Dominik Berner, Johel Ernesto Guerrero Peña, Charles Hogg, Nicolas Holthaus, Roth Michaels, Vincent Reverdy Target Audience LEWG SG16 Revisions R8 R7 Tracking issue View on GitHub Abstract Several groups in the ISO C++ Committee reviewed the “P1935: A C++ Approach to Physical Units” [[P1935R2]](https://wg21.link/p1935r2) proposal in Belfast 2019 and Prague 2020. All those groups expressed interest in the potential standardization of such a library and encouraged further work. The authors also got valuable initial feedback that highly influenced the design of the V2 version of the [[
	P4185R1	Completing the Mathematical Model for C++ Quantities and Units	M. Pusz	SG6
Mailing Date 2026-07 Post-Brno Author(s) Mateusz Pusz Target Audience SG6 Revisions R0 Tracking issue View on GitHub Abstract [[P3045R7]](https://wg21.link/p3045r7) proposes a C++ quantities and units framework built on two core abstractions: `quantity` (displacement vectors) and `quantity_point` (points in an affine space). Real-world experience with the [[mp-units]](https://mpusz.github.io/mp-units) reference implementation, together with feedback from SG6, BSI, ANSI, and the broader C++ community, shows that this

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