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Jackozee Hakkiuz's user avatar
Jackozee Hakkiuz's user avatar
Jackozee Hakkiuz's user avatar
Jackozee Hakkiuz
  • Member for 6 years, 7 months
  • Last seen this week
18 votes
Accepted

Sign of codifferential

12 votes

matrix inverse in tensor notation

8 votes

Covariant vectors and Dual spaces

8 votes

What is the conceptual idea behind raising and lowering indices?

7 votes

Matrix transponse in tensor notation

7 votes

Tensor product of 3 vectors

7 votes

Leibniz rule for covariant derivative

7 votes
Accepted

What is a set reduced to an element?

7 votes
Accepted

What is the reasoning/need for writing tensor indices like $T^i{\,}_j^{{\,\,}k}$ instead of $T_{j}^{ik}$ (or, $A^i_{\,\,\,j}$ instead of $A^i_j$)?

6 votes
Accepted

On the terminology concerning images in category theory

6 votes

First Isomorphism theorem for rings - what am I missing

6 votes

Derivative of a quadratic form using the chain rule

6 votes
Accepted

Functoriality and inverse images of sheaves

5 votes

Is there a notation for the given matrix manipulation?

5 votes
Accepted

Double Hodge star property

5 votes

How would you state categorically that $\mathcal{P}(X)$ and $2^X$ contains the same information?

5 votes

Is this ambiguity in the use of prime notation to denote a derivative?

5 votes
Accepted

Reynolds transport theorem: link with the Lie derivative?

5 votes

Expressing the codifferential of a $p$-form in terms of covariant derivatives

5 votes
Accepted

Tensor Index Ordering

5 votes
Accepted

Info on the locale of surjections from the Natural Numbers to the Real Numbers

5 votes
Accepted

Justification for notation of line integrals

4 votes
Accepted

What does fibre-wise mean?

4 votes

Defining tensor transpose without representing them as matrices

4 votes

Derivatives of a vector and its transpose

4 votes
Accepted

change of variables confusion

4 votes
Accepted

Translating a diagram chase into an element-free proof

4 votes

What is the difference between the derivative (the Jacobian), and the differential?

4 votes
Accepted

What is this notation $\mathbb{Z}_3[x]_{x^2+1}$?

4 votes

Isn't $k\in \emptyset$ a contradictory statement?

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