diff --git a/.github/actions/setup-cuequivariance-jax/action.yml b/.github/actions/setup-cuequivariance-jax/action.yml
index 48c58a0..23adc2e 100644
--- a/.github/actions/setup-cuequivariance-jax/action.yml
+++ b/.github/actions/setup-cuequivariance-jax/action.yml
@@ -14,28 +14,28 @@ runs:
       if: inputs.use-gpu != 'true'
       shell: bash
       run: |
-        python -m uv pip install -U pytest jax
+        uv pip install -U pytest jax
     
     - name: Install JAX (GPU)
       if: inputs.use-gpu == 'true'
       shell: bash
       run: |
-        python -m uv pip install -U pytest "jax[cuda12]"
-        python -m uv pip install nvidia-cusolver-cu12==11.7.3.90
-        python -m uv pip install nvidia-cublas-cu12
+        uv pip install -U pytest "jax[cuda12]"
+        uv pip install nvidia-cusolver-cu12==11.7.3.90
+        uv pip install nvidia-cublas-cu12
     
     - name: Install common dependencies
       shell: bash
       run: |
-        python -m uv pip install triton
-        python -m uv pip install "flax>=0.12.0"
+        uv pip install triton
+        uv pip install "flax>=0.12.0"
     
     - name: Clean and install packages
       shell: bash
       run: |
-        python -m uv pip uninstall cuequivariance cuequivariance_jax cuequivariance_torch 2>/dev/null || true
-        python -m uv pip install -e ./cuequivariance
-        python -m uv pip install -e ./cuequivariance_jax
+        uv pip uninstall cuequivariance cuequivariance_jax cuequivariance_torch 2>/dev/null || true
+        uv pip install -e ./cuequivariance
+        uv pip install -e ./cuequivariance_jax
     
     - name: Verify installation
       shell: bash
diff --git a/.github/actions/setup-cuequivariance-torch/action.yml b/.github/actions/setup-cuequivariance-torch/action.yml
index f960881..87f2bdc 100644
--- a/.github/actions/setup-cuequivariance-torch/action.yml
+++ b/.github/actions/setup-cuequivariance-torch/action.yml
@@ -7,14 +7,14 @@ runs:
     - name: Install PyTorch dependencies
       shell: bash
       run: |
-        python -m uv pip install -U pytest torch e3nn
+        uv pip install -U pytest torch e3nn
     
     - name: Clean and install packages
       shell: bash
       run: |
-        python -m uv pip uninstall cuequivariance cuequivariance_jax cuequivariance_torch 2>/dev/null || true
-        python -m uv pip install -e ./cuequivariance
-        python -m uv pip install -e ./cuequivariance_torch
+        uv pip uninstall cuequivariance cuequivariance_jax cuequivariance_torch 2>/dev/null || true
+        uv pip install -e ./cuequivariance
+        uv pip install -e ./cuequivariance_torch
     
     - name: Verify installation
       shell: bash
diff --git a/.github/actions/setup-cuequivariance/action.yml b/.github/actions/setup-cuequivariance/action.yml
index 7f8a54d..3db9e0e 100644
--- a/.github/actions/setup-cuequivariance/action.yml
+++ b/.github/actions/setup-cuequivariance/action.yml
@@ -20,4 +20,4 @@ runs:
     - name: Install cuequivariance
       shell: bash
       run: |
-        python -m uv pip install -e ./cuequivariance[dev]
+        uv pip install -e ./cuequivariance[dev]
diff --git a/.github/actions/setup-docs/action.yml b/.github/actions/setup-docs/action.yml
index d297c7d..354eee6 100644
--- a/.github/actions/setup-docs/action.yml
+++ b/.github/actions/setup-docs/action.yml
@@ -13,16 +13,16 @@ runs:
     - name: Install JAX and PyTorch dependencies
       shell: bash
       run: |
-        python -m uv pip install -U pytest jax torch e3nn
-        python -m uv pip install "flax>=0.12.0"
+        uv pip install -U pytest jax torch e3nn
+        uv pip install "flax>=0.12.0"
     
     - name: Install packages
       shell: bash
       run: |
-        python -m uv pip install -e ./cuequivariance
-        python -m uv pip install -e ./cuequivariance_jax
-        python -m uv pip install -e ./cuequivariance_torch
-        python -m uv pip install -r docs/requirements.txt
+        uv pip install -e ./cuequivariance
+        uv pip install -e ./cuequivariance_jax
+        uv pip install -e ./cuequivariance_torch
+        uv pip install -r docs/requirements.txt
     
     - name: Verify installation
       shell: bash
diff --git a/.github/actions/setup-python-uv/action.yml b/.github/actions/setup-python-uv/action.yml
index a208d05..3db8efc 100644
--- a/.github/actions/setup-python-uv/action.yml
+++ b/.github/actions/setup-python-uv/action.yml
@@ -1,5 +1,5 @@
-name: 'Setup Python with uv'
-description: 'Set up Python and install uv package manager'
+name: 'Setup uv and Python'
+description: 'Set up uv package manager and Python'
 
 inputs:
   python-version:
@@ -10,13 +10,14 @@ inputs:
 runs:
   using: 'composite'
   steps:
-    - name: Set up Python ${{ inputs.python-version }}
-      uses: actions/setup-python@v5
+    - name: Set up uv
+      uses: astral-sh/setup-uv@v7
       with:
-        python-version: ${{ inputs.python-version }}
-    
-    - name: Install uv
+        enable-cache: true
+
+    - name: Create venv with Python ${{ inputs.python-version }}
       shell: bash
       run: |
-        python -m pip install --upgrade pip
-        python -m pip install --upgrade uv
+        uv venv --python ${{ inputs.python-version }} .venv
+        echo "${{ github.workspace }}/.venv/bin" >> $GITHUB_PATH
+        echo "VIRTUAL_ENV=${{ github.workspace }}/.venv" >> $GITHUB_ENV
diff --git a/.github/workflows/nightly-tests.yml b/.github/workflows/nightly-tests.yml
index 423f472..23bf345 100644
--- a/.github/workflows/nightly-tests.yml
+++ b/.github/workflows/nightly-tests.yml
@@ -56,7 +56,7 @@ jobs:
     
     - name: Downgrade numpy
       run: |
-        python -m uv pip install -U "numpy==1.26.*"
+        uv pip install -U "numpy==1.26.*"
     
     - name: Test with pytest (numpy 1.26, including slow tests)
       run: |
diff --git a/.github/workflows/style.yml b/.github/workflows/style.yml
index e2226bd..e61f8af 100644
--- a/.github/workflows/style.yml
+++ b/.github/workflows/style.yml
@@ -16,15 +16,12 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Python
-      uses: actions/setup-python@v5
+    - uses: ./.github/actions/setup-python-uv
       with:
         python-version: "3.12"
     - name: Setup Pre-commit
       run: |
-        python -m pip install --upgrade pip
-        python -m pip install --upgrade uv
-        python -m uv pip install pre-commit
+        uv pip install pre-commit
         pre-commit install
     - name: Run Pre-commit
       run: |
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 8aa7fee..920e7fb 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -14,28 +14,30 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.12"]
+        python-version: ["3.10", "3.14"]
 
     steps:
     - uses: actions/checkout@v4
-    
+
     - uses: ./.github/actions/setup-python-uv
       with:
         python-version: ${{ matrix.python-version }}
-    
+
     - uses: ./.github/actions/setup-cuequivariance
       with:
         install-graphviz: 'true'
-    
+
     - name: Test with pytest
       run: |
         pytest --doctest-modules -x -m "not slow" cuequivariance
-    
+
     - name: Downgrade numpy
+      if: matrix.python-version == '3.10'
       run: |
-        python -m uv pip install -U "numpy==1.26.*"
-    
+        uv pip install -U "numpy==1.26.*"
+
     - name: Test with pytest (numpy 1.26)
+      if: matrix.python-version == '3.10'
       run: |
         pytest --doctest-modules -x -m "not slow" cuequivariance
 
@@ -45,17 +47,17 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.11", "3.13"]
+        python-version: ["3.11", "3.14"]
 
     steps:
     - uses: actions/checkout@v4
-    
+
     - uses: ./.github/actions/setup-python-uv
       with:
         python-version: ${{ matrix.python-version }}
-    
+
     - uses: ./.github/actions/setup-cuequivariance-jax
-    
+
     - name: Test with pytest
       run: |
         XLA_PYTHON_CLIENT_PREALLOCATE=false pytest --doctest-modules -x -m "not slow" cuequivariance_jax
@@ -66,17 +68,17 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    
+
     - uses: ./.github/actions/setup-python-uv
       with:
         python-version: "3.12"
-    
+
     - name: Install without flax
       run: |
-        python -m uv pip install -U jax
-        python -m uv pip install -e ./cuequivariance
-        python -m uv pip install -e ./cuequivariance_jax
-    
+        uv pip install -U jax
+        uv pip install -e ./cuequivariance
+        uv pip install -e ./cuequivariance_jax
+
     - name: Verify import without flax
       run: |
         python -c "import cuequivariance_jax; print('cuex', cuequivariance_jax.__version__)"
@@ -93,13 +95,13 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    
+
     - uses: ./.github/actions/setup-python-uv
       with:
         python-version: ${{ matrix.python-version }}
-    
+
     - uses: ./.github/actions/setup-cuequivariance-torch
-    
+
     - name: Test with pytest
       run: |
         pytest --doctest-modules -x -m "not slow" cuequivariance_torch
diff --git a/.gitignore b/.gitignore
index efa6755..5bdb1b0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ __pycache__
 docs/api/generated/
 docs/public/
 docs/jupyter_execute/
+docs/_build/
diff --git a/cuequivariance/cuequivariance/segmented_polynomials/segmented_tensor_product.py b/cuequivariance/cuequivariance/segmented_polynomials/segmented_tensor_product.py
index 3a5a134..359598e 100644
--- a/cuequivariance/cuequivariance/segmented_polynomials/segmented_tensor_product.py
+++ b/cuequivariance/cuequivariance/segmented_polynomials/segmented_tensor_product.py
@@ -817,7 +817,15 @@ def add_segment(
         """Add a segment to the descriptor."""
         if isinstance(segment, dict):
             segment = tuple(segment[m] for m in self.subscripts.operands[operand])
-        return self.operands[operand].add_segment(segment)
+        result = self.operands[operand].add_segment(segment)
+        # Rebuild tuple to invalidate CPython's cached tuple hashes,
+        # which become stale after the operand is mutated in-place.
+        object.__setattr__(
+            self,
+            "operands_and_subscripts",
+            tuple((ope, ss) for ope, ss in self.operands_and_subscripts),
+        )
+        return result
 
     def add_segments(
         self, operand: int, segments: list[Union[tuple[int, ...], dict[str, int]]]