I am replying to a part of my own post for which I have not received any responses.
The code below is copied from the wiki and is part of the html for our wiki. The text which refers to this pseudo graphic refers to the 3 "arrow"s which appear as tiny boxes in the wiki version of fsoj41. I think the positions of the 3 tiny boxes is correct but they do not resemble the desirable ↓ (down arrow) symbol referred to at this link ` https://en.wikipedia.org/wiki/Wikipedia:Mathematical_symbols `. The ↓ cannot be applied in this context if the <pre>...</pre> is to be employed; at least I don't know how to do so. I'm looking for suggestions about how to produce the pseudo graphic in html. For example is there a way in html to assign ↓ to an extended ascii character (sort of like assigning a value to a variable) and then put that character between the <pre>...</pre> s? Btw, I have convinced myself from googling mostly "modular arithmetic" that these pseudo graphics make some sense, and that Norman's usage of the term "finite arithmetic" is not widely used. Though I have not seen any pseudo graphic that are similar to Norman's, a careful perusal of the graphics help make the point he is making. *********wiki html code below ********* <pre> 🠇 ───────────────────── mod 5 3 4 0 -4 -3 🠇 ──────────────────────────────────── mod 7 3 4 5 6 0 -6 -5 -4 -3 🠇 ──────────────────────────────────────────────────── mod 9 3 4 5 6 7 8 0 -8 -7 -6 -5 -4 -3 </pre> *********wiki html code above ********* On Sun, Aug 19, 2018 at 4:38 PM Brian Schott <[email protected]> wrote: > Having attempted to edit fsoj39 and fsoj40, I am giving some thought to > attacking fsoj41, but the subject matter is way out of my experience range: > finite arithmetic involving modular algebra algebra, I think, but don't > quote me. > > I think I have found one consequential but minor error on page 264 of the > pdf version below, where the following line should use 23, not 17. > > mod=.1 : '17&|@x' NB. set modulus > > But my question is mainly about the line graphs on page 268. The line > graphs have arrows that I don't understand at all, to the point where I > question their position and meaning. For example, of the 3 first graphs, > the third has an arrow to the left of _3 and I wonder if it should be to > the right of _3 as in the first two graphs. The fourth graph is apparently > different from the others in that the negative numbers on the axis, > although missing, are imagined on the left side of zero. Not only do I not > understand the graphs and arrows, I don't have a clue about how their > corrected versions can be represented in html on the wiki. > > So I would welcome someone else taking fsoj41 or at least giving me > pointers. > > > -- > (B=) <-----my sig > Brian Schott > -- (B=) <-----my sig Brian Schott ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
