Chapter 26: precision definitions of Sequence, Series, Function,
Continuity, Topology,
Algebra
I am happy I put this chapter near the end of the text since
sharpening the definitions
is an ongoing process.
Recently I had this pretty insight as to precision defining
"continuity" in mathematics
since numbers have 10^-603 holes between consecutive Reals or
consecutive points.
So that made it quite unsightly to define continuity when a line in
mathematics
looks like this .............. and not like this _______________
Continuity as defined in New Math is that an equation is continuous if
it is a function without a break such as a step function. A break is
defined as not having
a derivative.
A torus is not a function , nor is a circle a function and thus they
are not continuous.
An equation of y=sin(1/x) or y = x , or y=10^603 x are continuous
because they are functions.
Now Continuity defined as such also clarifies what the subject of
Topology involves and what it does not involve. Topology is a subset-
subject of Geometry and topology focuses on geometries that have holes
larger than 10^-603. Topology is a subject that does not deal nor
handles functions. All functions are continuous, except for step-
functions.
So this leads to intriguing insights. If you can plot a function and
it has no breaks in it, then it is continuous. You can plot a circle
and you can plot a torus but neither are functions and thus they
immediately qualify as having a torus topology.
As mentioned previously, what this does, is demonstrate that the
Calculus is a Projection, a Projective Geometry upon a Coordinate
System. In effect, I am connecting the entire subject of Calculus as a
Projective Geometry upon a Coordinate System, and the exercise of
finding a derivative or integral is an exercise of keeping all the
numbers fixed relative to one another and finding the angles with
respect to any two given coordinate-numbers.
Topology, likewise, is a subject that is also a Projective Geometry
upon a Coordinate System, however the difference with Topology versus
Calculus, is
all the plotting in Calculus are functions, and because they are
functions (other than step-functions) they are continuous and thus
differentiable and integrable. In Topology, the plotting may or may
not be a function, and if a function then it is uninteresting for it
does not have any topology tears like a torus. So Topology is a
plotting of nonfunctions with tears larger than 10^-603.
Now I am sure I have some flaws and errors in the above, but given
some time to
think over these items, I am sure to make more clear and error free,
for now, it is the basic outline of major ideas that I want to put
front and center. I think I can eliminate step functions, because to
me they seem to be obeying the rules of what forms a function. For
example when someone says the function y=1 then we clearly see it as a
continuous function, but when someone proffers a function of
y=1 for [0,4) and then y=2 for [4,oo) seems to me to be cheating in
what is a function for somehow it looks like a compound function of
stitching part of the function y=1 onto y=2. So I think I maybe able
to eliminate all step functions out of
mathematics as compound-functions which are not really functions at
all.
So that if I defined functions as meaning elemental functions versus
compound functions and eliminate compound functions altogether, would
result in higher clarity.