I can begin to address the issue of the concept number. At the heart of it must be spaciometry. I have abstractly refered to the tensor spaciometry as quantity and "number". The relational ratios in a tensor encapsulaing Quantity and the boundary of the tensor encpsulating unity or one.
Numbering is a simple naming activity, but the naming activity can be made complex or rhythmic or repetitious or systematic. It is these intuitions that cultures bring to their numbering that inform their concept of number. Value is also attributed to their cultural counting /naming iteration, and that value is proprtioned throughout the whole process of numbering so that each number may hold an ordinal value or a cardinal value or both, and a rank according to the proportion of value. The map between value and number is spaciometric and thus provides a circular or tautological basis to value. The source of value lies within our own neurology and is culturally maintained, defined and standardised and enforced, at least in weights and measures and SI units etc.
Thus number becomes a name that identifies a stage in a cultural iteration onto which a culture encrusts many meanings, all of which reflect a spaciometric attribute of the many tensors in space.
Given this description i venture to add that the attempt to tie number mathematically to one abstract tensor, a linear fractal called a line distorted the concept of number and confused those who had cultural attachments to number. Newtons tutor
John Wallis was principal in achieving this and despite the neatness of it the underlying fractal has come to the fore when mathematicians were not ready for them in general. Thus Cantor, Julia, sierpinski, Peano, all gutturally felt these fractals as monsters and horrors eating away at the basis of reality and of course mathematics.
The area of solving arithmetic problems using algorithms led to the development of Babylonian binomial equations to trinomial and quartic and eventually quintic. The increase in the number of terms in the equation reflected the effect of iteration on these algorithms as they described relational aspects in spaciometry,and the systematic relations that underlie manipulations. This "attacking" of a problem by "manipulations" is a very militaristic paradigm, and underlies all the notions f combination and permutation, issues that would very much concern the militaristic mind through the ages, but also the commercial or merchant mind would consider these aspects of the spaciometric tensors under its hand.
This rich appreciation of number and value is what the number line threatened, and that is why it was a tool for mathematicians per se. Fractions and the numberline are where mathematicians withdrew contact with the general culture and began to distinguish mathematics as a specialist field of study with certain enforced tools.
Fortunately for us the iterative nature of reality put a cold hand of dread on them and hopefully will prevent mathematicians from disappering up heir own anus!
So in the times of the great
Taxonomists the subject of mathematics came under taxanomic scrutiny, and among other things the taxonomy of equations was updated to
"polynomials". Mathematical reference for the body of knowledge to do with algorithmic solutions to quadratic, cubic, quartic and quintic equations became subsumed under the heading polynomial of rank or order 2,3,4,5 etc. The term binomial had existed prior to this for a while , so this represented a tidying up of the taxonomy for ontological purposes.
Early on in the development of the solution to the equations surds had been encountered as solutions. Surds are purely geometrical values, in that they naturally arise in euclidean geometry of the right angled triangle. The very name of the equations quadratic and cubic testify to the geometrical basis of these algorithms. Going beyond the cubic meant that no geometry informed the solution, Thus it made solution harder and less intuitive and relied much upon "abstract" relationships and symbolic manipulations,and analogy of form. Essentially try to view the quartic and quintic equation as some kind of quadratic or cubic one. That is simply to utilise the spaciometry of the day to intuit the solution.
Without formally recognising the difference mathematicians had come across a type of value in solving their equations which were geometrical, ratioed and measured, not counted. Thus they were not numbers, nor were they the ratio of any common or archimedian numbers. They were thus called surds and meant "geometrical measurements".
In the course of this feverish activity
mathematicians came across a curious surd √-1. As mathematicians new general surds had a value they did not reject this as meaningless, but as some geometical measurement they did not yet understand. They were necessary for many solutions of quartic and cubic equations and so had an algorithmic value.
It was not until Argand that their geometric meaning was hinted at, and by then the number line had queered the pitch and the surds had become irrational Numbers, rather than geometrical measurements. it could not be seen for a long while that √-1 was a geometrical measurement of rotation. It is still not appreciated as that even today.
Due to abstract and symbolic manipulations some
mathematicians had developed algorithms that gave solutions to the quadratic and cubics both as numbers and surds, particularly when the negative number rules had become well established. The negative numbers were another geometrical value, but because they were defined in terms of a balance, and from that the commercial bookkeepers financial sheets/ tablets, their geometric meaning was obscured. Their geometric meaning is in fact a rotation through π radians, if one accepts the number line.
The chinese and the indian mathematicians had a good understanding of them in the commercial context, and in the context of quadratic equations, but they were not easy to accept just as √-1 was not easy to accept.
It is of great importance to realise the spaciometric origin of these quantites and how they do not exist without the awareness of a mathematician and his/her paradigm. The concept of number is a cultural totem, based on identifiable tensors in space. The relational ratios in a tensor quantity are key to the distinction i am about to make:measurement and distinction .
The Logos Response provides me with measurements of ratios. These ratios are a field effect in my experiential continuum, and i respond to them by processes within my CNS and Peripheral NS with an action that boundarises regions in that field, based on comparison of the relativistic motion attributes within those regions. Thus the field of ratios from the Logos Response is a Motion Field. Although i cannot say much more about that yet i am working on it in the thread on the Axioms of setFS. Nevertheless the point is that Measurements of ratios not Counting is the fundamental response to the motion field in the set notFS.
The distinctions we make by boundarisation are the source of our language response. Thus our language response holds the bounded distinctions in and among the tensors. One aspect of our language response is the identification of plurality, which means the recognition of more than one and the recognition of repetiton of bounded regions: identical, similar, or none similar. At the same time i recognise the relativistic relationships between these regions in this plurality. Thus the spatial arrangement is inherent within this notion of plurality. Thus to sum it up almost the first notion that arises through the logs response is a measurable spaciometry; the second notion is a languaged spaciometry and the third notion is a countable spaciometry, in that order.
All Founding mathematician exclusively engaged with the spaciometry in doing and thinking about their mathematics. Thus while a region is real when it is in front of one, it is also a real memory that can be in front of the mind at the same time , Recognising this the indian mathematician in particular were able to conceive of debt as an absent region, a re-balancing of scales or the filling in of a hole, or the removal or changing of a colour. The chinese used coloured rods to represent a region that was removed from the direct view of the mathematician, but was important to account for the regions in view. Spaciometrically the red rods were removed from the relationships under purview, but needed to be accounted for. Each red rod thus told a story, and the story might be one of debt, loss, investment, advance or retreat, whatever the mathematician wanted to account for over a sequence of events. a set of relativistic motions.
With these spaciometric tools and memory tools in mind Indian mathematicians were able to give rules of manipulation which became the rules we use for signs today. How they arrived at -*-=+ i have yet to uncover, but our mathematics is the way it is because of this rule. We now can explore different "sign" rules and see what mathematics they produce, but the one we have resonates in so many ways with the natural order that it is unlikely to be replaced.
Thus the geometric/ spaciometric underpinnings of number are clear but mathematicians began to confuse measurement and a number concept. The geometric measuring scalar fractal was and is different to the number line concept, although of course the number line concept is an analogous system that principally John Wallis used to great effect. However Wallis used it as a geometric measuring line, later mathematicians like Cauchy and Dedekind ripped it away from these geometrical roots and created the number concept we use today. This number concept is a aggregation of number, memory tools like number, surds and Fractions, and infinitesimal like limit values including continued fractions and e and π cognates.
It seemed crazy to extend numbers by fractions, even crazier by negative numbers, but to then attempt to add √-1 was a step too far. Mathematicians have resolved the conflict by the invention of vector mathematics, but few recognise the work of
Bombelli 1572 book-keeping was highly
developed in northern Italy,
but even "simple" negative numbers were just introduced
(and the + and - signs unknown). So the hydraulic ingenieur
Bombelli wrote a poem about "piu" and "meno" to teach
calculating these. In his book "L Algebra" he didn't try to
solve x²+1=0 any longer; instead he recognized the "necessarissimi"
existence of squareroots of negative numbers and introduced
sign-rules,f.e.:

Just insert numbers and you can calculate every combination.
So he introduces them as new members to the family of numbers,
or, more precise, of quantities, lets say of a different branch (we
express this by the word adjungate or adjoin). In modern words
he is calculating vectors.
For him, it was not an abstract construction.
Solving equations were done with geometric constructions and
Bombelli used L-shaped rulers for this:The aftermath of this age long construction has been a confusion in the concept of number, carried on today through the use of number when referring to geometric values and operations, and relationships. The concept of a tensor has the power to resolve this issue of geometrical measurements in a vector type relationship, or a matrix or indeed a relational database called a tensor. This allows quantities and measurements to be separated from number and number to be returned to its cultural role in naming stages in the counting iteration.
Tensors, by which i mean weights and measures and dimensional units are the geometrical heirs of the "number line" concept, modified now to a geometrical vector.