need help to read some symbols. Thx! thx! thx!

[hdungbeat]

Giup tui doc may cai nay bang tieng A voi

dE/dt, ∂A/∂B, [∂A/∂B],
(∂A/∂B),{∂A/∂B},
(∂A/∂B), Z=fn(x,y)
(∂P/∂S)v=const.va cac ki hieu nhu: #,~, ?, >, →, ↔, ┴, ≡.
Tien day cho tui hoi bac nao co cai trang Web day ve cach doc cac ki hieu hoac cong thuc ko? chi tui coi nhe!

thanks alot!

[sang56]

Giup tui doc may cai nay bang tieng A voi

dE/dt, ∂A/∂B, [∂A/∂B],
(∂A/∂B),{∂A/∂B},
(∂A/∂B), Z=fn(x,y)
(∂P/∂S)v=const.va cac ki hieu nhu: #,~, ?, >, →, ↔, ┴, ≡.
Tien day cho tui hoi bac nao co cai trang Web day ve cach doc cac ki hieu hoac cong thuc ko? chi tui coi nhe!

thanks alot!

This is a long list! Có thể đọc theo dấu hiệu hay theo nghĩa trong toán (partial differential equation)

dE/dt : đi E over đi t hay differential or derivative of E with respect to t

∂A/∂B : đel A over đel B (∂: delta) hay partial differential or partial derivative of A with respect to B

(∂P/∂S)v=const : đel P over đel S, constant v hay partial differential or partial derivative of P with respect to S holding v constant

Z=fn(x,y) : Z is a function of x and y

# : number
~ : approximate
? : question mark
> : greater than
→ : approaching a number for math, like approaching zero or infinity;
direction of reaction for chemical reactions

≡ : identical, defined as
The following two symbols may have special meanings in matrix math that I forgot:
↔ : reversible?
┴ : orthogonal?

[dethuong_x0x]

em ko chắc chắn :
→ còn có thể đọc là ray( tia )
↔ còn có thể đọc là line ( đường )
┴ perpendicular ( cái này ko biết nha ) chỉ biết là nó có nghĩa vuông góc

[unnamed]

em ko chắc chắn :
┴ perpendicular ( cái này ko biết nha ) chỉ biết là nó có nghĩa vuông góc

In geometry, x ⊥ y means x is perpendicular to y; or more generally x is orthogonal to y.
Otherwise, In lattice theory, x = ⊥ means x is the smallest element.

(∂P/∂S)v=const

I just want to comment this expression above: it means that "the partial derivative of P (pressure) with respect to S (entropy) when V (volume) kept constant".
Furthermore, one can access this page http://en.wikipedia.org/wiki/Table_o...atical_symbols to find out the mathematical symbols.

[hdungbeat]

Em cảm ơn các bác nhiều!
to bác Sang 56 theo Em biết thì 2 kí tự ∂và δ là khác nhau. Kí tự δ mới gọi là đelta, đây là đel ta thường còn kí tự Δ là đel ta viết hoa.

once again, thank you for the supports! especially to unnamed because your comment is very helpful for me!

PS: my English is not good so I do not know whether the English grammar in above sentence is correct or not!

[unnamed]

Em cảm ơn các bác nhiều!
to bác Sang 56 theo Em biết thì 2 kí tự ∂và δ là khác nhau. Kí tự δ mới gọi là đelta, đây là đel ta thường còn kí tự Δ là đel ta viết hoa.

once again, thank you for the supports! especially to unnamed because your comment is very helpful for me!

PS: my English is not good so I do not know whether the English grammar in above sentence is correct or not!

One more link is:
http://www.w3.org/Math/characters/html/symbol.html
Once again, thank you all for your supports, especially to unnamed because his comment is very helpful for me!

PS: My English is not good so I do not know whether the English grammar in the above ...

[sang56]

In geometry, x ⊥ y means x is perpendicular to y; or more generally x is orthogonal to y.
Otherwise, In lattice theory, x = ⊥ means x is the smallest element.

I just want to comment this expression above: it means that "the partial derivative of P (pressure) with respect to S (entropy) when V (volume) kept constant".
Furthermore, one can access this page http://en.wikipedia.org/wiki/Table_o...atical_symbols to find out the mathematical symbols.

Unnamed,
Very good. I was focusing on the math symbols and did not notice their thermodynamic significance. What technical field are you in? engineering, applied math....? Mine is chemical engineering & biotechnology.

Thanks for the link to the site listing the math symbols; the information is handy.

Bythe way, you probably live in a German-speaking country?

[unnamed]

Unnamed,
Very good. I was focusing on the math symbols and did not notice their thermodynamic significance. What technical field are you in? engineering, applied math....? Mine is chemical engineering & biotechnology.

Thanks for the link to the site listing the math symbols; the information is handy.

Bythe way, you probably live in a German-speaking country?

Thanks for asking. My research field is the solid-state physics. Now I am in Germany to take a three year PhD course. Where are you living now? when did you go abroad?
It is very nice to see you in this forum.