diff --git a/test/torch/test_funcs.py b/test/torch/test_funcs.py
index 315b47039f98cfca49c91a94c4299121324aab47..4e17619e9069e7ac2f1568fd6622ba7197728664 100644
--- a/test/torch/test_funcs.py
+++ b/test/torch/test_funcs.py
@@ -4,7 +4,7 @@ import torch
 import treetensor.torch as ttorch
 
 
-# noinspection DuplicatedCode
+# noinspection DuplicatedCode,PyUnresolvedReferences
 @pytest.mark.unittest
 class TestTorchFuncs:
     def test_tensor(self):
@@ -567,3 +567,80 @@ class TestTorchFuncs:
             'a': [1.0, 2.0, 1.5],
             'b': {'x': [[1.8, 0.9], [1.3, 2.5]]},
         })) == torch.tensor(11.0)
+
+    def test_clone(self):
+        t1 = ttorch.clone(torch.tensor([1.0, 2.0, 1.5]))
+        assert isinstance(t1, torch.Tensor)
+        assert (t1 == torch.tensor([1.0, 2.0, 1.5])).all()
+
+        t2 = ttorch.clone(ttorch.tensor({
+            'a': [1.0, 2.0, 1.5],
+            'b': {'x': [[1.8, 0.9], [1.3, 2.5]]},
+        }))
+        assert (t2 == ttorch.tensor({
+            'a': [1.0, 2.0, 1.5],
+            'b': {'x': [[1.8, 0.9], [1.3, 2.5]]},
+        })).all()
+
+    def test_dot(self):
+        t1 = ttorch.dot(torch.tensor([1, 2]), torch.tensor([2, 3]))
+        assert isinstance(t1, torch.Tensor)
+        assert t1.tolist() == 8
+
+        t2 = ttorch.dot(
+            ttorch.tensor({
+                'a': [1, 2, 3],
+                'b': {'x': [3, 4]},
+            }),
+            ttorch.tensor({
+                'a': [5, 6, 7],
+                'b': {'x': [1, 2]},
+            })
+        )
+        assert (t2 == ttorch.tensor({'a': 38, 'b': {'x': 11}})).all()
+
+    def test_matmul(self):
+        t1 = ttorch.matmul(
+            torch.tensor([[1, 2], [3, 4]]),
+            torch.tensor([[5, 6], [7, 2]]),
+        )
+        assert isinstance(t1, torch.Tensor)
+        assert (t1 == torch.tensor([[19, 10], [43, 26]])).all()
+
+        t2 = ttorch.matmul(
+            ttorch.tensor({
+                'a': [[1, 2], [3, 4]],
+                'b': {'x': [3, 4, 5, 6]},
+            }),
+            ttorch.tensor({
+                'a': [[5, 6], [7, 2]],
+                'b': {'x': [4, 3, 2, 1]},
+            }),
+        )
+        assert (t2 == ttorch.tensor({
+            'a': [[19, 10], [43, 26]],
+            'b': {'x': 40}
+        })).all()
+
+    def test_mm(self):
+        t1 = ttorch.mm(
+            torch.tensor([[1, 2], [3, 4]]),
+            torch.tensor([[5, 6], [7, 2]]),
+        )
+        assert isinstance(t1, torch.Tensor)
+        assert (t1 == torch.tensor([[19, 10], [43, 26]])).all()
+
+        t2 = ttorch.mm(
+            ttorch.tensor({
+                'a': [[1, 2], [3, 4]],
+                'b': {'x': [[3, 4, 5], [6, 7, 8]]},
+            }),
+            ttorch.tensor({
+                'a': [[5, 6], [7, 2]],
+                'b': {'x': [[6, 5], [4, 3], [2, 1]]},
+            }),
+        )
+        assert (t2 == ttorch.tensor({
+            'a': [[19, 10], [43, 26]],
+            'b': {'x': [[44, 32], [80, 59]]},
+        })).all()
diff --git a/test/torch/test_tensor.py b/test/torch/test_tensor.py
index 7f2a03df56d46873f6c288bcf6416229d0176436..66703a40816a312f1e2703368c85df08dcc58695 100644
--- a/test/torch/test_tensor.py
+++ b/test/torch/test_tensor.py
@@ -10,6 +10,7 @@ from treetensor.common import Object
 _all_is = func_treelize(return_type=ttorch.Tensor)(lambda x, y: x is y)
 
 
+# noinspection PyUnresolvedReferences
 @pytest.mark.unittest
 class TestTorchTensor:
     _DEMO_1 = ttorch.Tensor({
@@ -208,3 +209,75 @@ class TestTorchTensor:
             'a': [True, False],
             'b': {'x': [[True, True], [False, True]]}
         })).all()
+
+    def test_clone(self):
+        t1 = ttorch.tensor([1.0, 2.0, 1.5]).clone()
+        assert isinstance(t1, torch.Tensor)
+        assert (t1 == torch.tensor([1.0, 2.0, 1.5])).all()
+
+        t2 = ttorch.tensor({
+            'a': [1.0, 2.0, 1.5],
+            'b': {'x': [[1.8, 0.9], [1.3, 2.5]]},
+        }).clone()
+        assert (t2 == ttorch.tensor({
+            'a': [1.0, 2.0, 1.5],
+            'b': {'x': [[1.8, 0.9], [1.3, 2.5]]},
+        })).all()
+
+    def test_dot(self):
+        t1 = torch.tensor([1, 2]).dot(torch.tensor([2, 3]))
+        assert isinstance(t1, torch.Tensor)
+        assert t1.tolist() == 8
+
+        t2 = ttorch.tensor({
+            'a': [1, 2, 3],
+            'b': {'x': [3, 4]},
+        }).dot(
+            ttorch.tensor({
+                'a': [5, 6, 7],
+                'b': {'x': [1, 2]},
+            })
+        )
+        assert (t2 == ttorch.tensor({'a': 38, 'b': {'x': 11}})).all()
+
+    def test_matmul(self):
+        t1 = torch.tensor([[1, 2], [3, 4]]).matmul(
+            torch.tensor([[5, 6], [7, 2]]),
+        )
+        assert isinstance(t1, torch.Tensor)
+        assert (t1 == torch.tensor([[19, 10], [43, 26]])).all()
+
+        t2 = ttorch.tensor({
+            'a': [[1, 2], [3, 4]],
+            'b': {'x': [3, 4, 5, 6]},
+        }).matmul(
+            ttorch.tensor({
+                'a': [[5, 6], [7, 2]],
+                'b': {'x': [4, 3, 2, 1]},
+            }),
+        )
+        assert (t2 == ttorch.tensor({
+            'a': [[19, 10], [43, 26]],
+            'b': {'x': 40}
+        })).all()
+
+    def test_mm(self):
+        t1 = torch.tensor([[1, 2], [3, 4]]).mm(
+            torch.tensor([[5, 6], [7, 2]]),
+        )
+        assert isinstance(t1, torch.Tensor)
+        assert (t1 == torch.tensor([[19, 10], [43, 26]])).all()
+
+        t2 = ttorch.tensor({
+            'a': [[1, 2], [3, 4]],
+            'b': {'x': [[3, 4, 5], [6, 7, 8]]},
+        }).mm(
+            ttorch.tensor({
+                'a': [[5, 6], [7, 2]],
+                'b': {'x': [[6, 5], [4, 3], [2, 1]]},
+            }),
+        )
+        assert (t2 == ttorch.tensor({
+            'a': [[19, 10], [43, 26]],
+            'b': {'x': [[44, 32], [80, 59]]},
+        })).all()
diff --git a/treetensor/torch/funcs.py b/treetensor/torch/funcs.py
index 3908edb6998b7d1d1c092a49b149395f75d9bd54..6cb91283670a0b7d0bc81a2fcaa845715b5b5877 100644
--- a/treetensor/torch/funcs.py
+++ b/treetensor/torch/funcs.py
@@ -20,7 +20,8 @@ __all__ = [
     'all', 'any',
     'min', 'max', 'sum',
     'eq', 'ne', 'lt', 'le', 'gt', 'ge',
-    'equal', 'tensor',
+    'equal', 'tensor', 'clone',
+    'dot', 'matmul', 'mm',
 ]
 
 func_treelize = post_process(post_process(args_mapping(
@@ -816,3 +817,140 @@ def tensor(*args, **kwargs):
                           [False,  True]])
     """
     return torch.tensor(*args, **kwargs)
+
+
+# noinspection PyShadowingBuiltins
+@doc_from(torch.clone)
+@func_treelize()
+def clone(input, *args, **kwargs):
+    """
+    In ``treetensor``, you can create a clone of the original tree with :func:`treetensor.torch.clone`.
+
+    Examples::
+
+        >>> import torch
+        >>> import treetensor.torch as ttorch
+        >>> ttorch.clone(torch.tensor([[1, 2], [3, 4]]))
+        tensor([[1, 2],
+                [3, 4]])
+
+        >>> ttorch.clone(ttorch.tensor({
+        ...     'a': [[1, 2], [3, 4]],
+        ...     'b': {'x': [[5], [6], [7]]},
+        ... }))
+        <Tensor 0x7f2a820ba5e0>
+        ├── a --> tensor([[1, 2],
+        │                 [3, 4]])
+        └── b --> <Tensor 0x7f2a820aaf70>
+            └── x --> tensor([[5],
+                              [6],
+                              [7]])
+    """
+    return torch.clone(input, *args, **kwargs)
+
+
+# noinspection PyShadowingBuiltins
+@doc_from(torch.dot)
+@func_treelize()
+def dot(input, other, *args, **kwargs):
+    """
+    In ``treetensor``, you can get the dot product of 2 tree tensors with :func:`treetensor.torch.dot`.
+
+    Examples::
+
+        >>> import torch
+        >>> import treetensor.torch as ttorch
+        >>> ttorch.dot(torch.tensor([1, 2]), torch.tensor([2, 3]))
+        tensor(8)
+
+        >>> ttorch.dot(
+        ...     ttorch.tensor({
+        ...         'a': [1, 2, 3],
+        ...         'b': {'x': [3, 4]},
+        ...     }),
+        ...     ttorch.tensor({
+        ...         'a': [5, 6, 7],
+        ...         'b': {'x': [1, 2]},
+        ...     })
+        ... )
+        <Tensor 0x7feac55bde50>
+        ├── a --> tensor(38)
+        └── b --> <Tensor 0x7feac55c9250>
+            └── x --> tensor(11)
+    """
+    return torch.dot(input, other, *args, **kwargs)
+
+
+# noinspection PyShadowingBuiltins
+@doc_from(torch.matmul)
+@func_treelize()
+def matmul(input, other, *args, **kwargs):
+    """
+    In ``treetensor``, you can create a matrix product with :func:`treetensor.torch.matmul`.
+
+    Examples::
+
+        >>> import torch
+        >>> import treetensor.torch as ttorch
+        >>> ttorch.matmul(
+        ...     torch.tensor([[1, 2], [3, 4]]),
+        ...     torch.tensor([[5, 6], [7, 2]]),
+        ... )
+        tensor([[19, 10],
+                [43, 26]])
+
+        >>> ttorch.matmul(
+        ...     ttorch.tensor({
+        ...         'a': [[1, 2], [3, 4]],
+        ...         'b': {'x': [3, 4, 5, 6]},
+        ...     }),
+        ...     ttorch.tensor({
+        ...         'a': [[5, 6], [7, 2]],
+        ...         'b': {'x': [4, 3, 2, 1]},
+        ...     }),
+        ... )
+        <Tensor 0x7f2e74883f40>
+        ├── a --> tensor([[19, 10],
+        │                 [43, 26]])
+        └── b --> <Tensor 0x7f2e74886430>
+            └── x --> tensor(40)
+    """
+    return torch.matmul(input, other, *args, **kwargs)
+
+
+# noinspection PyShadowingBuiltins
+@doc_from(torch.mm)
+@func_treelize()
+def mm(input, mat2, *args, **kwargs):
+    """
+    In ``treetensor``, you can create a matrix multiplication with :func:`treetensor.torch.mm`.
+
+    Examples::
+
+        >>> import torch
+        >>> import treetensor.torch as ttorch
+        >>> ttorch.mm(
+        ...     torch.tensor([[1, 2], [3, 4]]),
+        ...     torch.tensor([[5, 6], [7, 2]]),
+        ... )
+        tensor([[19, 10],
+                [43, 26]])
+
+        >>> ttorch.mm(
+        ...     ttorch.tensor({
+        ...         'a': [[1, 2], [3, 4]],
+        ...         'b': {'x': [[3, 4, 5], [6, 7, 8]]},
+        ...     }),
+        ...     ttorch.tensor({
+        ...         'a': [[5, 6], [7, 2]],
+        ...         'b': {'x': [[6, 5], [4, 3], [2, 1]]},
+        ...     }),
+        ... )
+        <Tensor 0x7f2e7489f340>
+        ├── a --> tensor([[19, 10],
+        │                 [43, 26]])
+        └── b --> <Tensor 0x7f2e74896e50>
+            └── x --> tensor([[44, 32],
+                              [80, 59]])
+    """
+    return torch.mm(input, mat2, *args, **kwargs)
diff --git a/treetensor/torch/tensor.py b/treetensor/torch/tensor.py
index 77a9f69ce5d6d02a2a9660df00642ea94ce2731e..788e226ed34e79e995e9dcd1cfe69a8e006bbcc7 100644
--- a/treetensor/torch/tensor.py
+++ b/treetensor/torch/tensor.py
@@ -261,3 +261,35 @@ class Tensor(Torch, metaclass=clsmeta(_to_tensor, allow_dict=True)):
         See :func:`treetensor.torch.ge`.
         """
         return self >= other
+
+    @doc_from(torch.Tensor.clone)
+    @method_treelize()
+    def clone(self, *args, **kwargs):
+        """
+        See :func:`treetensor.torch.clone`.
+        """
+        return self.clone(*args, **kwargs)
+
+    @doc_from(torch.Tensor.dot)
+    @method_treelize()
+    def dot(self, other, *args, **kwargs):
+        """
+        See :func:`treetensor.torch.dot`.
+        """
+        return self.dot(other, *args, **kwargs)
+
+    @doc_from(torch.Tensor.mm)
+    @method_treelize()
+    def mm(self, mat2, *args, **kwargs):
+        """
+        See :func:`treetensor.torch.mm`.
+        """
+        return self.mm(mat2, *args, **kwargs)
+
+    @doc_from(torch.Tensor.matmul)
+    @method_treelize()
+    def matmul(self, tensor2, *args, **kwargs):
+        """
+        See :func:`treetensor.torch.matmul`.
+        """
+        return self.matmul(tensor2, *args, **kwargs)