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JS_101775611-Visitor
1-Visitor
October 30, 2022
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Vinculum in defined variable greyed out

  • October 30, 2022
  • 5 replies
  • 2872 views

In an equation, the horizontal line between a numerator and a denominator is called the vinculum. In working my analysis using Mathcad Express V8, in some defined variables, the vinculum is greyed out while the rest is normalMathcad V8 vinculum greyed out.png.  Another defined variable right above it is normal. The font type, size, and color are both the same.

Best answer by LucMeekes

This is a known phenomenon for several versions of Prime, see for example:

https://community.ptc.com/t5/Mathcad/Faint-division-line/m-p/760257#M198382

https://community.ptc.com/t5/Mathcad/prime-no-division-line/m-p/690449#M192221

 

Success!
Luc

5 replies

F
Fred_Kohlhepp23-Emerald I
23-Emerald I
October 30, 2022

Does it print greyed out, or is that an artifact of the display graphics?

J
JS_101775611-VisitorAuthor
1-Visitor
October 30, 2022

I have not yet tried to print.

J
JS_101775611-VisitorAuthor
1-Visitor
October 30, 2022

I found that this is a zoom issue with mathcad. 

    V
    24-Ruby III
    VladimirN24-Ruby III
    24-Ruby III
    October 30, 2022

    What screen resolution do you have?

    J
    JS_101775611-VisitorAuthor
    1-Visitor
    October 30, 2022

    MIS laptop with 1920 x 1080 resolution. I have been working on this laptop for several months and this issue kept popping up. After posting the question, I changed the zoom and noticed that it disappeared for one variable and appeared for another. I was working at a zoom of about 115 percent. 

     

    I will see it this problem persists on a 4K monitor and when printing.

    L
    LucMeekes23-Emerald IVAnswer
    23-Emerald IV
    October 30, 2022

    This is a known phenomenon for several versions of Prime, see for example:

    https://community.ptc.com/t5/Mathcad/Faint-division-line/m-p/760257#M198382

    https://community.ptc.com/t5/Mathcad/prime-no-division-line/m-p/690449#M192221

     

    Success!
    Luc

      W
      Werner_E25-Diamond I
      25-Diamond I
      October 30, 2022

      OK, you found out yourself that this display glitch has to do with the (Prime) zoom factor set, and also windows zoom factor and screen resolution.

      And Luc already noted that this bug is already known since very early Prime versions and obviously is still not fixed.

       

      I reply because I have a question. You wrote

      In an equation, the horizontal line between a numerator and a denominator is called the vinculum.

      Are you sure about that? I'm not an English native speaker and sure eager to learn something knew. I had always used something like "fraction bar" or "fraction line" for this line, but I may be wrong. I searched, and found that Collins describes "vinculum" as "a horizontal  line drawn  above a group of mathematical  terms, used as an alternative  to parentheses  in mathematical expressions , as in x  + ̅ y  – z  which is equivalent  to x + (y – z)".

      https://www.collinsdictionary.com/de/worterbuch/englisch/vinculum

      Thats a mathematical notation was unknown to me so far, but it looks like it has nothing to with fractions!?

      L
      LucMeekes23-Emerald IV
      23-Emerald IV
      October 30, 2022

      It's more like this:

      LucMeekes_0-1667164339075.png

      The word vinculum, (probably) stems from the latin word vinculum, which means, a.o., belt, strap, intimate embrace. The only place where Mathcad supports this usage is in roots, as in

      LucMeekes_0-1667165038392.png

      The vinculum is the line above  a+b. (See also here: https://en.wikipedia.org/wiki/Vinculum_(symbol) )

       

      And yes, vinculum is also used to describe the fraction line, and as such Mathcad also supports it. See https://amsi.org.au/ESA_middle_years/Year6/Year6_md/Year6_1b.html

       

      Luc

        W
        Werner_E25-Diamond I
        25-Diamond I
        October 30, 2022

        Thanks! Its nice to still learn something new.

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