Add C4v CTMRG and QR-CTMRG example#336

Open

pbrehmer wants to merge 7 commits intomasterfrom

Commits on Feb 19, 2026

Allow for real-valued C4v optimization with `:fixed` mode and add real-valued C4v Heisenberg test
pbrehmer
committed
Add dummy truncation error and condition number return to `c4v_projector` and add QR-CTMRG optimization tests
pbrehmer
committed
Add rendered C4v eaxmple
pbrehmer
committed

Commits on Feb 20, 2026

Fix typos
pbrehmer
committed
Apply suggestions

pbrehmer
and
Yue-Zhengyuan
authored
Rerender C4v example
pbrehmer
committed

Commits on Feb 24, 2026

Write Hamiltonian without `rmul!`

pbrehmer
and
lkdvos
authored