# dot product of two tensors

• ### SUMMARY OF VECTOR AND TENSOR NOTATION

2006-12-4 · - Second-order tensors (shear stress or momentum flux tensor) While for scalars only one type of multiplication is possible for vectors and tensors several kinds are possible which are single dot .double dot cross x The following types of parenthesis will also be used to denote the results of various operations.

• ### torch.dot — PyTorch 1.9.0 documentation

2021-7-21 · torch.dot(input other out=None) → Tensor Computes the dot product of two 1D tensors.

• ### Tensor Arithmetics MTEX

2021-5-17 · The double dot product between two rank two tensors is essentially their inner product and can be equivalently computed from the trace of their matrix product. T1 T2 trace (T1 T2 ) trace (T1 T2) ans = 3.3131 ans = 3.3131 ans = 3.3131 Determinant. For rank two tensors we can compute the determinant of the tensor by the command det. det (T1)

• ### A Some Basic Rules of Tensor Calculusuni-halle

2006-5-8 · scalars vectors and tensors are handled as invariant (independent from the choice of the coordinate system) objects. This is the reason for the use of the direct notation in the modern literature of mechanics and rheology e.g. 29 32 49 123 131 199 Scalar (Dot) Product of two Vectors.

• ### matlabDouble dot product of two tensorsStack Overflow

2021-3-20 · The inner product of two tensors should be a scalar. So you need to sum across the final array that his code produces. function C = double_dot(A B) assert( isvector(A) isvector(B)) idx = max(0 ndims(A)1) B_t = permute(B circshift(1 ndims(A) ndims(B) 0 idx1 )) C = sum(squeeze(sum(squeeze(sum(bsxfun( times A B_t) idx)) idx)))

• ### Dot product of two tensors within neural network NetGraph

2021-6-6 · Dot product of two tensors within neural network NetGraph. I would like to train a word-embedding type model (specifically "Walklets" from the paper by Bryan Perozzi et al). In the simplest form (ignoring stuff like negative sampling) we want to maximize Pr ( ϕ ( i) ϕ ( j)) given observed input pairs where ϕ ( x) gives the embedding vector.

• ### Mathematical Methods Spring Term 2017 2. Notes on

2019-2-27 · The dot product of two vectors U and V can be written UV = U 1V 1 U 2V 2 U 3V 3 = U iV i ij are tensors of rank two then W ij = T ij U ij is also a tensor of rank two. Multiplying a tensor by a scalar gives a tensor of the same rank. Tensors of any rank can be multiplied if T i 1i

• ### A Basic Operations of Tensor AlgebraSpringer

2017-8-27 · A.3 Bases 171 a b a b ab ϕ ϕ ϕ c∗ c a b c Fig. A.4Vector product of two vectors. aPlane spanned on two vectors bspin vector caxial vector in the right-screw oriented reference frame • from the resulting spin vector the directed line segment c is constructed according to one of the rules listed in Sect. A.1. The properties of the vector product are

• ### Calculate dot product of two tensor products in

2020-3-20 · Calculate dot product of two tensor products in mathematica as tensorproduct. Ask Question Asked 1 year 4 months ago. Active 1 year 4 months ago. Viewed 205 times 2 1 begingroup I would like to calculate However this does not give me a tensorproduct of the 3 tensors.

• ### Dot product of tensors Physics Forums

2009-10-6 · 0. There is a single dot tensor product and a double dot scalar product of two tensors. It is explained here http //math.mtu.edu/ feigl/courses/CFD-script/tensor-review.pdf. (sorry same link as above) I find it used in computational fluid dynamics problems.

• ### linear algebraDot product of the vector r and second

2018-10-24 · T = r 2 δ i j x i x j r 3 e i e j. is symmetric. For a rank n tensor T the situation is even more complicated. Because now the notion of T ⋅ v needs extra clarification. It is a good idea to write T ⋅ m v meaning the dot product is done over the m th component. Or better yet avoid using dot

• ### pythonDot product of two vectors in tensorflowStack

2016-11-18 · TensorFlow Contracting a dimension of two tensors via dot product. 0. Broadcast dot product in tensorflow. 20. tf.multiply vs tf.matmul to calculate the dot product. 4. Dot product between two 3D tensors. 0. Triple tensor product with Tensorflow. Hot Network Questions

• ### numpy.tensordot — NumPy v1.14 ManualSciPy

2018-1-8 · numpy.tensordot¶ numpy.tensordot (a b axes=2) source ¶ Compute tensor dot product along specified axes for arrays >= 1-D. Given two tensors (arrays of dimension greater than or equal to one) a and b and an array_like object containing two array_like objects (a_axes b_axes) sum the products of a s and b s elements (components) over the axes specified by a_axes and b_axes.

• ### Tensor GuideVespa

2021-6-8 · Tensors are used during ranking to modify a document s rank score given the query. Typical operations are dot products between tensors of order 1 (vectors) or matrix products between tensors of order 2 (matrices). Tensors are used in rank expressions as rank features. Two

• ### Calculate dot product of two tensor products in

2020-3-20 · Calculate dot product of two tensor products in mathematica as tensorproduct. Ask Question Asked 1 year 4 months ago. Active 1 year 4 months ago. Viewed 205 times 2 1 begingroup I would like to calculate However this does not give me a tensorproduct of the 3 tensors.

• ### numpy.tensordot — NumPy v1.21 Manual

2021-6-22 · numpy.tensordot(a b axes=2) source ¶ Compute tensor dot product along specified axes. Given two tensors a and b and an array_like object containing two array_like objects (a_axes b_axes) sum the products of a s and b s elements (components) over the axes specified by a_axes and b_axes.

• ### A REVIEW OF VECTORS AND TENSORSTAMU Mechanics

2017-1-4 · VECTORS TENSORS22. SECOND-ORDER TENSORS . A second-order tensor is one that has two basis vectors standing next to each other and they satisfy the same rules as those of a vector (hence mathematically tensors are also called vectors). A second-order tensor and its . transpose. can be expressed in terms of rectangular Cartesian base vectors as

• ### numpy.tensordot — NumPy v1.21 Manual

2021-6-22 · numpy.tensordot¶ numpy. tensordot (a b axes = 2) source ¶ Compute tensor dot product along specified axes. Given two tensors a and b and an array_like object containing two array_like objects (a_axes b_axes) sum the products of a s and b s elements (components) over the axes specified by a_axes and b_axes.The third argument can be a single non-negative integer_like scalar

• ### 7.1 Vectors Tensors and the Index Notation

2020-5-12 · dot product. of two vectors . a. and . b. is denoted by . a⋅. b. and is a scalar defined by . a. ⋅. b = a b. cosθ. .1.1)(7 . θ here is the angle between the vectors when their initial points coincide and is restricted to the range 0 ≤θ≤π. Cartesian Coordinate System . So far the short discussion has been in symbolic notation. 2

• ### Calculate dot product of two tensor products in

2020-3-20 · Calculate dot product of two tensor products in mathematica as tensorproduct. Ask Question Asked 1 year 4 months ago. Active 1 year 4 months ago. Viewed 205 times 2 1 begingroup I would like to calculate However this does not give me a tensorproduct of the 3 tensors.

• ### Difference between Tensor product dot product and the

2017-9-3 · In the book Schutz on general relativity I have come across the dot product between vectors the action of a dual vector on a vector (or also a tensor on vectors) and the tensor product between dual

• ### matrixGradient of dot product of two tensors

2021-6-5 · The contraction of two of the indices is usually called double dot product shown by . endgroup Alish May 9 20 at 2 01 1 begingroup Alish is right the term B _ m is only equal to (e_mcdot nabla)B and not e_mcdot nabla B . endgroup HBR May 9 20 at 11 22

• ### Tensor Arithmetics MTEX

2021-5-17 · The double dot product between two rank two tensors is essentially their inner product and can be equivalently computed from the trace of their matrix product. T1 T2 trace (T1 T2 ) trace (T1 T2) ans = 3.3131 ans = 3.3131 ans = 3.3131 Determinant. For rank two tensors we can compute the determinant of the tensor by the command det. det (T1)

• ### Difference between Tensor product dot product and the

2017-9-3 · In the book Schutz on general relativity I have come across the dot product between vectors the action of a dual vector on a vector (or also a tensor on vectors) and the tensor product between dual

• ### Tensor GuideVespa

2021-6-8 · Tensors are used during ranking to modify a document s rank score given the query. Typical operations are dot products between tensors of order 1 (vectors) or matrix products between tensors of order 2 (matrices). Tensors are used in rank expressions as rank features. Two

• ### Tensor Mathematics CFD Direct Architects of OpenFOAM

2016-10-1 · Tensors of higher rank than two can be formed by the product of more than two vectors e.g. a third rank tensor a fourth rank tensor . If one of the tensor products is replaced by a scalar product of two vectors the resulting tensor is two ranks less than the

• ### Tensor AlgebraEuclidean Tensor Analysis

2021-7-5 · Tensor products. Given two tensors and it is possible to combine them to obtain a tensor of higher order.Specifically the tensor product of and is defined as the tensor such that for any As a special case given vectors their tensor product yields a second order tensor for any The foregoing definition can be extended to define the tensor product of a finite number of tensors.

• ### A Some Basic Rules of Tensor Calculusuni-halle

2006-5-8 · scalars vectors and tensors are handled as invariant (independent from the choice of the coordinate system) objects. This is the reason for the use of the direct notation in the modern literature of mechanics and rheology e.g. 29 32 49 123 131 199 Scalar (Dot) Product of two Vectors.

• ### Introduction to the Tensor ProductUC Santa Barbara

2012-3-11 · 4. General Tensors and Examples Now that we have the a de nition of the tensor product in general. De nition 5. Let T r s (V) = z r V V s V V= N r V N V then T s (V) is said to be a tensor of type (rs). Earlier we saw how to multiply two tensors ˝and ˙of type (k0) and (l0) respectively. The new order is the sum of the orders of the

• ### tensorflow => Dot Product

The dot product between two tensors can be performed using tf.matmul (a b) A full example is given below # Build a graph graph = tf.Graph () with graph.as_default () # A 2x3 matrix a = tfnstant

• ### linear algebraDot product of the vector r and second

2018-10-24 · T = r 2 δ i j x i x j r 3 e i e j. is symmetric. For a rank n tensor T the situation is even more complicated. Because now the notion of T ⋅ v needs extra clarification. It is a good idea to write T ⋅ m v meaning the dot product is done over the m th component. Or better yet avoid using dot

• ### Vector and Tensor AlgebraTU/e

2010-8-31 · Fig. 3 Addition of two vectors c = a b 1.1.3 Scalar product The scalar or inner product of two vectors is the product of their lengths and the cosine of the smallest angle between them. The result is a scalar which explains its name. Because the product is generally denoted with a dot between the vectors it is also called the dot product.

• ### 1 Vectors TensorsAuckland

2020-5-12 · 1.1.4 The Dot Product The dot product of two vectors a and b (also called the scalar product) is denoted by a b. It is a scalar defined by a b a b cos . (1.1.1) here is the angle between the vectors when their initial points coincide and is restricted to the range 0 Fig. 1.1.4. Figure 1.1.4 the dot product

• ### Tensor Dot Product of two tensors of arbitrary order

2019-1-9 · I am currently working on implementing the inner(scalar or dot) product of two tensors of arbitrary order. As far as i understand you need to make sure that the last dimension of the first tensor pmb A matches in size with the first dimension of the second tensor pmb B .

• ### 7.1 Vectors Tensors and the Index Notation

2020-5-12 · dot product. of two vectors . a. and . b. is denoted by . a⋅. b. and is a scalar defined by . a. ⋅. b = a b. cosθ. .1.1)(7 . θ here is the angle between the vectors when their initial points coincide and is restricted to the range 0 ≤θ≤π. Cartesian Coordinate System . So far the short discussion has been in symbolic notation. 2

• ### linear algebraDot product of the vector r and second

2018-10-24 · Position vector r is given as r → = x i e i and the second order tensor T is given as T ¯ ¯ = δ i j e i e j r x i x j e i e j r 3. How to determine (dot product) r →. T ¯

• ### Vector and Tensor AlgebraTU/e

2010-8-31 · Fig. 3 Addition of two vectors c = a b 1.1.3 Scalar product The scalar or inner product of two vectors is the product of their lengths and the cosine of the smallest angle between them. The result is a scalar which explains its name. Because the product is generally denoted with a dot between the vectors it is also called the dot product.

• ### numpy.tensordot — NumPy v1.14 ManualSciPy

2018-1-8 · numpy.tensordot¶ numpy.tensordot (a b axes=2) source ¶ Compute tensor dot product along specified axes for arrays >= 1-D. Given two tensors (arrays of dimension greater than or equal to one) a and b and an array_like object containing two array_like objects (a_axes b_axes) sum the products of a s and b s elements (components) over the axes specified by a_axes and b_axes.

• ### 7.1 Vectors Tensors and the Index Notation

2020-5-12 · dot product. of two vectors . a. and . b. is denoted by . a⋅. b. and is a scalar defined by . a. ⋅. b = a b. cosθ. .1.1)(7 . θ here is the angle between the vectors when their initial points coincide and is restricted to the range 0 ≤θ≤π. Cartesian Coordinate System . So far the short discussion has been in symbolic notation. 2

• ### Tensor Dot Product of two tensors of arbitrary order

2019-1-9 · Tensor Dot Product of two tensors of arbitrary order. I am currently working on implementing the inner (scalar or dot) product of two tensors of arbitrary order. As far as i understand you need to make sure that the last dimension of the first tensor A A matches in size with the first dimension of the second tensor B B.