Lindy Walton
Forum Replies Created
-
Posts
-
Hi Susan. All of these words are not part of the math. Only the words done in Nemeth Code need to be uncontracted.
I have put the "math" words in boldface, below. I have also attached a transcription of these three bulleted items.
- Arithmetic sequence: nth term = Original Term + (n−1)d, where d is the constant difference between terms.
- Geometric sequence: nth term = Original Term × r<sup>(n−1)</sup>, where r is the constant ratio.
- Group Formula: Total = Group 1 + Group 2 − Both + Neither
Let me know if I didn't understand your question.
Lindy
The Braille Code for Chemical Notation 1997 is a Nemeth Code document. It expands on the Nemeth Code by giving symbols for chemical notation. It also has a few unique format rules. Electron dot notation is in the Chemistry Code (3.2.1, 4.1.5, and 4.3). The braille symbol (dots 16) represents the single electron dot (3.2.1). It is unspaced. See the attached brf file to see what the first two will look like in the sample you sent, using Nemeth in UEB contexts.
The reader will need to realize that (16) is an electron dot, not a multiplication dot or chemical period. Context should make it clear, just as it does in print where the same midline dot sign is used for all three purposes as well.
Lindy
Hi Susan. Yes, this is an electron dot bond. Dots (16) are used to represent this sign. Its meaning will be inferred by the reader, just as in print a midline dot can mean different things.
Lindy
Sure, yes, it is your call of course but in the context of answer choices, some of which *require Nemeth and others which could be in either code, I think it is best to stay in Nemeth for all four answer choices in your example.
Ah, now I see the image you sent. These are valence arrows. The current chemistry code doesn't discuss these in detail and may suggest that they be drawn. Transcribers have come up with different solutions to this problem, and the BANA chemistry committee is working on a recommendation which you may use in your transcription. Describe the symbols in a TN. You may use just the < symbol for the up-pointing valence arrow and just the % symbol for the down-pointing valence arrow. These symbols are to be used only in the context of valence arrows depicted in orbital diagrams. It is not necessary to indicate that the arrowheads are barbed--this is just a print style.
In your book, the arrow pairs are grouped with underlining. Show the grouping by inserting one space between pairs. When only the up arrow appears, the general omission symbol of the Nemeth Code is used to show the absence of the down-pointing valence arrow within the pair. Place element SYMBOLS or orbital level notation as column headings, leaving only one space between columns. I have attached a suggested solution to your example. This should work nicely for you.Lindy
Hi Susan. I'm glad you found your answer before I could get back to you! Yes, a negative number or a minus sign with a numeral is considered to be a "modification" of the number and so is done in Nemeth Code. The four identifiers (A. B. C. D.) can also be done in Nemeth, keeping code switching to a minimum.
Lindy
Hi. I'm not finding the arrows in question. What page are they on?
The "new" chemistry code is still being written. I've been told that APH will produce a print copy of the current (1997) code on demand. Please let me know if that is not the case. Thanks.
Lindy
Hi. I'm glad you asked this question. The colon sign in mathematics has seven different uses according to what I found on https://mathworld.wolfram.com/Colon.html
Your example, I believe, is item 3: "To give a name to a map, e.g., f:x|->x^2 (which is equivalent to the function notation f(x)=x^2)." In Lesson 4 of An Introduction to Braille Mathematics Using Nemeth Code within UEB Contexts (4.11.3 "Mapping Notation), it says to transcribe this colon as an unspaced symbol. In your example, this means ELI g PI colon x (Letter g is preceded by a space and followed by a punctuation mark, so it needs an ELI. Letter x is followed by a comparison sign so an ELI is not needed for x. A punctuation indicator is required before the colon.)_% ;G_3X $O ?1/2#X+6 _:
Oh my goodness. It looks like I did actually activate the braille font. It didn't show up until I posted the note.
I'll still ask about the issue.
Hi. My response is in the attached file.
Regarding the braille font, I was told that the issue has been corrected. But I can't get it to work either. I'll look into it.
Thanks for continuing to challenge my thinking!
Lindy
Thank you for finding that previous post from 2013! I was unfamiliar with the term "augmented matrix". I see now that the vertical line in an augmented matrix is not being used as a grouping sign, but rather as a separator. I think the best solution would be to draw the line as a tactile graphic, but if that option is not available to you, using the (456) "vertical line" makes sense. This is not the (1256) "vertical bar" (which has mathematical meaning). This "column separator" usage is similar to the vertical line used in a stem-and-leaf plot which became an option for us in the 2007 BANA Update. You'll note that there is a space before and after the vertical line when used in this manner. Let me know what you think.
Lindy
Hi Don. The vertical bar you are looking for is called an Enlarged Sign of Grouping in the Nemeth Code. You can find the enlarged single vertical bar listed in the table on page 123 of the 1972 codebook. Its use is illustrated in a determinant in example (2), Section 126, "Use of Enlarged Grouping Symbols".
Let me know if you have further questions. You have a big project ahead of you.
Lindy
Yes, that is correct. When following Nemeth Code formatting rules, the first line of a narrative paragraph is indented two cells from the runover margin. Section 190.a of the Nemeth Code says "paragraphs must begin in cell 3 and must be run over, if necessary, in cell 1." This is the correct placement for narrative that follows a cell-5 heading. Have fun with that glossary!
Lindy
Hi, Angela. We have stated in the "Provisional Guidance for Chemistry Notation Using Nemeth in UEB Contexts" that when chemical abbreviations appear in narrative context, code switching is unnecessary. Even though a functional group is technically not an "abbreviation", chemical groups fall in this category. We neglected to make that distinction in the Provisional Guidance. A switch to Nemeth Code is necessary only when technical symbols are associated with the letter or if typeform is other than regular or italic. So go ahead and transcribe A, C, T, and G in UEB.
Regarding the graphic, I confirmed with my chemistry experts (it helps to have one of those when you are working on a chemistry book!) that the "P" in the graphic represents a phosphate group, not the element SYMBOL for phosphorus (likewise, the "S" represents a sugar group, not the element SYMBOL for sulfur) which means that you do not need to switch to Nemeth Code for the graphic. However, do note that since the letters in the diagram are not labels they will each require a UEB grade-1 indicator unless you set grade-1 mode for the diagram. I recommend that option, to keep the diagram uncluttered.
Thank you for your important question.
LindyHi Laurie. This project has returned to haunt us, I see. Back in December we decided to switch to Nemeth Code for the IP addresses because they are being used in math context with the equals sign. Your transcription of 2001:db8:130F::9C0:876A:130B looks good to me. It's hard to see all those punctuation indicators and numeric indicators when one of the highlights of the Nemeth Code is its compactness, but I see no other way around this. Good job.
Lindy
