What does the mathematical symbol with an underline below the variable name mean? The 2019 Stack Overflow Developer Survey Results Are InWhat does $R_0^+$ mean?Bar symbol over a matrixWhat does this $asymp$ symbol mean? (subject: analytic number theory)Matrix product notationWhat does a function as a subscript mean?What does $ int a$ ^ $ b $ mean?What Does the Logical Equivalence Symbol Mean Between Two Sets?What does this notation mean in modular arithmetic?Meaning of $gtrless$ in the context of multiple hypothesis testingWhat does $sim_k$ mean
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What does the mathematical symbol with an underline below the variable name mean?
The 2019 Stack Overflow Developer Survey Results Are InWhat does $R_0^+$ mean?Bar symbol over a matrixWhat does this $asymp$ symbol mean? (subject: analytic number theory)Matrix product notationWhat does a function as a subscript mean?What does $ int a$ ^ $ b $ mean?What Does the Logical Equivalence Symbol Mean Between Two Sets?What does this notation mean in modular arithmetic?Meaning of $gtrless$ in the context of multiple hypothesis testingWhat does $sim_k$ mean
$begingroup$
I have been reading a research paper. The author has used a variable '$x$' with an underline beneath '$x$'. I know that a variable with with a line on top of it implies it's arithmetic mean. But I have never seen a symbol with a line under the variable name. Can anyone please tell what it means.
Thanks in advance.
notation
edited May 16 '16 at 18:32
J. M. is not a mathematician
61.2k5152290
asked May 16 '16 at 18:13
sajidsajid
812
$endgroup$
|
show 6 more comments
$begingroup$
I have been reading a research paper. The author has used a variable '$x$' with an underline beneath '$x$'. I know that a variable with with a line on top of it implies it's arithmetic mean. But I have never seen a symbol with a line under the variable name. Can anyone please tell what it means.
Thanks in advance.
notation
edited May 16 '16 at 18:32
J. M. is not a mathematician
61.2k5152290
asked May 16 '16 at 18:13
sajidsajid
812
$endgroup$
1
$begingroup$
You mean $largeunderline x$ ? What is the context ?
$endgroup$
– callculus
May 16 '16 at 18:16
$begingroup$
Yes. But the paper is related to Linear Programming.
$endgroup$
– sajid
May 16 '16 at 18:17
6
$begingroup$
There is no universal meaning for underlining of variables. It would be impossible to guess the meaning without having the paper identified, but almost surely the author defines that notation before using it.
$endgroup$
– hardmath
May 16 '16 at 18:18
4
$begingroup$
"have been reading a research paper" - where? A link would be helpful. Even better, as previously noted, the author surely explained his/her notations somewhere near the paper's beginning.
$endgroup$
– J. M. is not a mathematician
May 16 '16 at 18:20
$begingroup$
@user3708999 Can you scan the context and upload?
$endgroup$
– Narasimham
May 16 '16 at 18:27
|
show 6 more comments
$begingroup$
I have been reading a research paper. The author has used a variable '$x$' with an underline beneath '$x$'. I know that a variable with with a line on top of it implies it's arithmetic mean. But I have never seen a symbol with a line under the variable name. Can anyone please tell what it means.
Thanks in advance.
notation
edited May 16 '16 at 18:32
J. M. is not a mathematician
61.2k5152290
asked May 16 '16 at 18:13
sajidsajid
812
$endgroup$
I have been reading a research paper. The author has used a variable '$x$' with an underline beneath '$x$'. I know that a variable with with a line on top of it implies it's arithmetic mean. But I have never seen a symbol with a line under the variable name. Can anyone please tell what it means.
Thanks in advance.
notation
notation
edited May 16 '16 at 18:32
J. M. is not a mathematician
61.2k5152290
asked May 16 '16 at 18:13
sajidsajid
812
edited May 16 '16 at 18:32
J. M. is not a mathematician
61.2k5152290
asked May 16 '16 at 18:13
sajidsajid
812
edited May 16 '16 at 18:32
J. M. is not a mathematician
61.2k5152290
edited May 16 '16 at 18:32
J. M. is not a mathematician
61.2k5152290
edited May 16 '16 at 18:32
J. M. is not a mathematician
61.2k5152290
61.2k5152290
asked May 16 '16 at 18:13
sajidsajid
812
asked May 16 '16 at 18:13
sajidsajid
812
asked May 16 '16 at 18:13
sajidsajid
812
812
1
$begingroup$
You mean $largeunderline x$ ? What is the context ?
$endgroup$
– callculus
May 16 '16 at 18:16
$begingroup$
Yes. But the paper is related to Linear Programming.
$endgroup$
– sajid
May 16 '16 at 18:17
6
$begingroup$
There is no universal meaning for underlining of variables. It would be impossible to guess the meaning without having the paper identified, but almost surely the author defines that notation before using it.
$endgroup$
– hardmath
May 16 '16 at 18:18
4
$begingroup$
"have been reading a research paper" - where? A link would be helpful. Even better, as previously noted, the author surely explained his/her notations somewhere near the paper's beginning.
$endgroup$
– J. M. is not a mathematician
May 16 '16 at 18:20
$begingroup$
@user3708999 Can you scan the context and upload?
$endgroup$
– Narasimham
May 16 '16 at 18:27
|
show 6 more comments
1
$begingroup$
You mean $largeunderline x$ ? What is the context ?
$endgroup$
– callculus
May 16 '16 at 18:16
$begingroup$
Yes. But the paper is related to Linear Programming.
$endgroup$
– sajid
May 16 '16 at 18:17
6
$begingroup$
There is no universal meaning for underlining of variables. It would be impossible to guess the meaning without having the paper identified, but almost surely the author defines that notation before using it.
$endgroup$
– hardmath
May 16 '16 at 18:18
4
$begingroup$
"have been reading a research paper" - where? A link would be helpful. Even better, as previously noted, the author surely explained his/her notations somewhere near the paper's beginning.
$endgroup$
– J. M. is not a mathematician
May 16 '16 at 18:20
$begingroup$
@user3708999 Can you scan the context and upload?
$endgroup$
– Narasimham
May 16 '16 at 18:27
1
1
$begingroup$
You mean $largeunderline x$ ? What is the context ?
$endgroup$
– callculus
May 16 '16 at 18:16
$begingroup$
You mean $largeunderline x$ ? What is the context ?
$endgroup$
– callculus
May 16 '16 at 18:16
$begingroup$
Yes. But the paper is related to Linear Programming.
$endgroup$
– sajid
May 16 '16 at 18:17
$begingroup$
Yes. But the paper is related to Linear Programming.
$endgroup$
– sajid
May 16 '16 at 18:17
6
6
$begingroup$
There is no universal meaning for underlining of variables. It would be impossible to guess the meaning without having the paper identified, but almost surely the author defines that notation before using it.
$endgroup$
– hardmath
May 16 '16 at 18:18
$begingroup$
There is no universal meaning for underlining of variables. It would be impossible to guess the meaning without having the paper identified, but almost surely the author defines that notation before using it.
$endgroup$
– hardmath
May 16 '16 at 18:18
4
4
$begingroup$
"have been reading a research paper" - where? A link would be helpful. Even better, as previously noted, the author surely explained his/her notations somewhere near the paper's beginning.
$endgroup$
– J. M. is not a mathematician
May 16 '16 at 18:20
$begingroup$
"have been reading a research paper" - where? A link would be helpful. Even better, as previously noted, the author surely explained his/her notations somewhere near the paper's beginning.
$endgroup$
– J. M. is not a mathematician
May 16 '16 at 18:20
$begingroup$
@user3708999 Can you scan the context and upload?
$endgroup$
– Narasimham
May 16 '16 at 18:27
$begingroup$
@user3708999 Can you scan the context and upload?
$endgroup$
– Narasimham
May 16 '16 at 18:27
|
show 6 more comments
3 Answers
3
active
oldest
votes
$begingroup$
Such a notation often means a vector that is a solution of minimization problem in linear programming.
I googled for another article on MDS problem, it uses just ordinary vector notation (see p.4)
answered May 16 '16 at 19:26
SlowpokeSlowpoke
657923
$endgroup$
add a comment |
$begingroup$
It's not an often-used convention, but in physics, matrices are sometimes appended with a double line underneath and vectors a single line underneath. This somewhat unifies the matrix/vector notation without the clumsiness of vector notation (and how to extend that to matrices).
answered May 16 '16 at 18:25
Cameron WilliamsCameron Williams
22.5k43680
$endgroup$
$begingroup$
Your answer gives me a hint that it should be a vector. It fits in the context. Thanks.
$endgroup$
– sajid
May 16 '16 at 18:27
add a comment |
$begingroup$
In the article linked below, it seems it is used to mean the minimum possible value of the variable, while the same variable with a line above it means the maximum possible value of the variable.
https://www.researchgate.net/publication/221107546_On_Decision_Making_under_Interval_Uncertainty_A_New_Justification_of_Hurwicz_Optimism-Pessimism_Approach_and_its_Use_in_Group_Decision_Making
answered Jun 27 '17 at 18:33
mikemike
111
$endgroup$
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
Such a notation often means a vector that is a solution of minimization problem in linear programming.
I googled for another article on MDS problem, it uses just ordinary vector notation (see p.4)
answered May 16 '16 at 19:26
SlowpokeSlowpoke
657923
$endgroup$
add a comment |
$begingroup$
Such a notation often means a vector that is a solution of minimization problem in linear programming.
I googled for another article on MDS problem, it uses just ordinary vector notation (see p.4)
answered May 16 '16 at 19:26
SlowpokeSlowpoke
657923
$endgroup$
add a comment |
$begingroup$
Such a notation often means a vector that is a solution of minimization problem in linear programming.
I googled for another article on MDS problem, it uses just ordinary vector notation (see p.4)
answered May 16 '16 at 19:26
SlowpokeSlowpoke
657923
$endgroup$
Such a notation often means a vector that is a solution of minimization problem in linear programming.
I googled for another article on MDS problem, it uses just ordinary vector notation (see p.4)
answered May 16 '16 at 19:26
SlowpokeSlowpoke
657923
answered May 16 '16 at 19:26
SlowpokeSlowpoke
657923
answered May 16 '16 at 19:26
SlowpokeSlowpoke
657923
answered May 16 '16 at 19:26
SlowpokeSlowpoke
657923
657923
add a comment |
add a comment |
$begingroup$
It's not an often-used convention, but in physics, matrices are sometimes appended with a double line underneath and vectors a single line underneath. This somewhat unifies the matrix/vector notation without the clumsiness of vector notation (and how to extend that to matrices).
answered May 16 '16 at 18:25
Cameron WilliamsCameron Williams
22.5k43680
$endgroup$
$begingroup$
Your answer gives me a hint that it should be a vector. It fits in the context. Thanks.
$endgroup$
– sajid
May 16 '16 at 18:27
add a comment |
$begingroup$
It's not an often-used convention, but in physics, matrices are sometimes appended with a double line underneath and vectors a single line underneath. This somewhat unifies the matrix/vector notation without the clumsiness of vector notation (and how to extend that to matrices).
answered May 16 '16 at 18:25
Cameron WilliamsCameron Williams
22.5k43680
$endgroup$
$begingroup$
Your answer gives me a hint that it should be a vector. It fits in the context. Thanks.
$endgroup$
– sajid
May 16 '16 at 18:27
add a comment |
$begingroup$
It's not an often-used convention, but in physics, matrices are sometimes appended with a double line underneath and vectors a single line underneath. This somewhat unifies the matrix/vector notation without the clumsiness of vector notation (and how to extend that to matrices).
answered May 16 '16 at 18:25
Cameron WilliamsCameron Williams
22.5k43680
$endgroup$
It's not an often-used convention, but in physics, matrices are sometimes appended with a double line underneath and vectors a single line underneath. This somewhat unifies the matrix/vector notation without the clumsiness of vector notation (and how to extend that to matrices).
answered May 16 '16 at 18:25
Cameron WilliamsCameron Williams
22.5k43680
answered May 16 '16 at 18:25
Cameron WilliamsCameron Williams
22.5k43680
answered May 16 '16 at 18:25
Cameron WilliamsCameron Williams
22.5k43680
answered May 16 '16 at 18:25
Cameron WilliamsCameron Williams
22.5k43680
22.5k43680
$begingroup$
Your answer gives me a hint that it should be a vector. It fits in the context. Thanks.
$endgroup$
– sajid
May 16 '16 at 18:27
add a comment |
$begingroup$
Your answer gives me a hint that it should be a vector. It fits in the context. Thanks.
$endgroup$
– sajid
May 16 '16 at 18:27
$begingroup$
Your answer gives me a hint that it should be a vector. It fits in the context. Thanks.
$endgroup$
– sajid
May 16 '16 at 18:27
$begingroup$
Your answer gives me a hint that it should be a vector. It fits in the context. Thanks.
$endgroup$
– sajid
May 16 '16 at 18:27
add a comment |
$begingroup$
In the article linked below, it seems it is used to mean the minimum possible value of the variable, while the same variable with a line above it means the maximum possible value of the variable.
https://www.researchgate.net/publication/221107546_On_Decision_Making_under_Interval_Uncertainty_A_New_Justification_of_Hurwicz_Optimism-Pessimism_Approach_and_its_Use_in_Group_Decision_Making
answered Jun 27 '17 at 18:33
mikemike
111
$endgroup$
add a comment |
$begingroup$
In the article linked below, it seems it is used to mean the minimum possible value of the variable, while the same variable with a line above it means the maximum possible value of the variable.
https://www.researchgate.net/publication/221107546_On_Decision_Making_under_Interval_Uncertainty_A_New_Justification_of_Hurwicz_Optimism-Pessimism_Approach_and_its_Use_in_Group_Decision_Making
answered Jun 27 '17 at 18:33
mikemike
111
$endgroup$
add a comment |
$begingroup$
In the article linked below, it seems it is used to mean the minimum possible value of the variable, while the same variable with a line above it means the maximum possible value of the variable.
https://www.researchgate.net/publication/221107546_On_Decision_Making_under_Interval_Uncertainty_A_New_Justification_of_Hurwicz_Optimism-Pessimism_Approach_and_its_Use_in_Group_Decision_Making
answered Jun 27 '17 at 18:33
mikemike
111
$endgroup$
In the article linked below, it seems it is used to mean the minimum possible value of the variable, while the same variable with a line above it means the maximum possible value of the variable.
https://www.researchgate.net/publication/221107546_On_Decision_Making_under_Interval_Uncertainty_A_New_Justification_of_Hurwicz_Optimism-Pessimism_Approach_and_its_Use_in_Group_Decision_Making
answered Jun 27 '17 at 18:33
mikemike
111
answered Jun 27 '17 at 18:33
mikemike
111
answered Jun 27 '17 at 18:33
mikemike
111
answered Jun 27 '17 at 18:33
mikemike
111
111
add a comment |
add a comment |
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1
$begingroup$
You mean $largeunderline x$ ? What is the context ?
$endgroup$
– callculus
May 16 '16 at 18:16
$begingroup$
Yes. But the paper is related to Linear Programming.
$endgroup$
– sajid
May 16 '16 at 18:17
6
$begingroup$
There is no universal meaning for underlining of variables. It would be impossible to guess the meaning without having the paper identified, but almost surely the author defines that notation before using it.
$endgroup$
– hardmath
May 16 '16 at 18:18
4
$begingroup$
"have been reading a research paper" - where? A link would be helpful. Even better, as previously noted, the author surely explained his/her notations somewhere near the paper's beginning.
$endgroup$
– J. M. is not a mathematician
May 16 '16 at 18:20
$begingroup$
@user3708999 Can you scan the context and upload?
$endgroup$
– Narasimham
May 16 '16 at 18:27