So, lets get started and let the talk teaching begin.0) What is Logic_________________Mathematics is well developed and a perfect science to model Logic. So we use mathematics to help us understand what logic is. Math plays with numbers and geometry figures. In the same way, Logic is a play with ideas. Instead of numbers, logic plays with ideas. That is about as simple as to say what Logic is. Logic tries to make ideas clear, straight, and correct to help form conclusions from ideas.Math is numbers. Logic replaces numbers with "ideas".
Philosophy of Math problems I had while in High School----------------------------------------------------------------------------------------Well in New True Math we have no negative numbers and that causes far less problems when the only numbers that exist are positive numbers. When you have the Axiom that you cannot subtract more than what is available, you are released from a super burden of nonsense.In High School we spent a-lot of time on solutions of the Quadratic equation ax^2 + bx + c = 0, which is a polynomial but that time spent was mostly a brainwash waste of time. Old Math never understood that 0 is a special number and it should never be all alone on the right side of the equation. Instead, a positive Decimal Grid Number should be alone at all times on the rightside of the equation. When this happens, the solution for the Quadratic equation is as easy as organic cherry pie with organic whipped cream on top. Another missing axiom in Old Math as you can never have an equation with 0 all alone on the rightside.But there was one monster hardship that was extremely difficult for me to cope with while in High School. It is true but very difficult to explain. It occurs when you multiply two fractions of 1 together and you end up with a number that is smaller than either of the multipliers.
For example: 1/2 x 1/2 = 1/4 or in decimals 0.5 x 0.5 =0.25. The problem comes in when presented with multiplication as area.So I have a square here._________| || ||_________|Now I am told the side is 3, fine, the area inside is 3 x 3 =9. No problems there.I am now told the side is 1, no problems there for 1 x 1 =1 for interior area. Still no problems come to mind.However, now I am told the side is 0.5 and the interior area is 0.25. Here I have a problem in the mind. Same square as 3x3 or 1x1 but the side is 0.5 x 0.5 and the area inside is LESS than either of the sides.In High School, the books and teacher try to justify or reconcile this problem by saying by saying area of 0.5 x 0.5 =0.25 for Area is measured in how many unit-squares are inside a square. There is only 1/4 of a unit square in 0.5 x 0.5.But still that is unsatisfying to the mind as a answer.Another explanation goes on the lines of ---- if you multiply a number less than 1 by another number less than 1, your answer must be smaller than either of your multipliers.I bring this Conundrum up because the Integral of Calculus as the area inside each cell, starts to make Sense once we reach 1 and go beyond 1, while if we focus on the integral in all the cells of 10 Grid before we reach 1 with 0 to .1 or .1 to .2, or .2 to .3 etc. We run into this difficulty that the derivative has a hard time of spanning to where the next coordinate point of function graph lies.
It is appropriate that Logic Class fixes this problem for the math professors of the world could not fix their wrong and muddleheaded.
Stewart "Calculus" 5th edition, 2003, on page 44 says: Find the composite function f(x) = x^2 and g(x) = x-3, where both functions are polynomials. And Stewart goes on to show that f*g = (x-3)^2 while g*f = x^2 - 3. Stewart goes on to say that in general f*g is Not Equal to g*f.
As the distance from the axis of revolution decreases, the ring torus becomes a horn torus, then a spindle torus, and finally degenerates into a double-covered sphere.In geometry, a torus (pl.: tori or toruses) is a surface of revolution generated by revolving a circle in three-dimensional space one full revolution about an axis that is coplanar with the circle. The main types of tori include ring tori, horn tori, and spindle tori. A ring torus is sometimes colloquially referred to as a doughnut.
If the axis of revolution does not touch the circle, the surface has a ring shape and is called a torus of revolution, also known as a ring torus. If the axis of revolution is tangent to the circle, the surface is a horn torus. If the axis of revolution passes twice through the circle, the surface is a spindle torus (or self-crossing torus or self-intersecting torus). If the axis of revolution passes through the center of the circle, the surface is a degenerate torus, a double-covered sphere. If the revolved curve is not a circle, the surface is called a toroid, as in a square toroid.
Real-world objects that approximate a torus of revolution include swim rings, inner tubes and ringette rings.
A torus is different than a solid torus, which is formed by rotating a disk, rather than a circle, around an axis. A solid torus is a torus plus the volume inside the torus. Real-world objects that approximate a solid torus include O-rings, non-inflatable lifebuoys, ring doughnuts, and bagels.
In topology, a ring torus is homeomorphic to the Cartesian product of two circles: S1 × S1, which is sometimes used as the definition. It is a compact 2-manifold of genus 1. The ring torus is one way to embed this space into Euclidean space, but another way to do this is the Cartesian product of the embedding of S1 in the plane with itself. This produces a geometric object called the Clifford torus, a surface in 4-space.
In the field of topology, a torus is any topological space that is homeomorphic to a torus.[1] The surface of a coffee cup and a doughnut are both topological tori with genus one.
An example of a torus can be constructed by taking a rectangular strip of flexible material such as rubber, and joining the top edge to the bottom edge, and the left edge to the right edge, without any half-twists (compare Klein bottle).
Torus is a Latin word denoting something round, a swelling, an elevation, a protuberance.
A torus of revolution in 3-space can be parametrized as:[2]using angular coordinates , representing rotation around the tube and rotation around the torus's axis of revolution, respectively, where the major radius Ris the distance from the center of the tube to the center of the torus and the minor radius r is the radius of the tube.[3]
The ratio R/r is called the aspect ratio of the torus. The typical doughnut confectionery has an aspect ratio of about 3 to 2.[citation needed]
An implicit equation in Cartesian coordinates for a torus radially symmetric about the z-axis is
Algebraically eliminating the square root gives a quartic equation,
The three classes of standard tori correspond to the three possible aspect ratios between R and r:
When R ≥ r, the interiorof this torus is diffeomorphic (and, hence, homeomorphic) to a product of a Euclidean open disk and a circle. The volume of this solid torus and the surface area of its torus are easily computed using Pappus's centroid theorem, giving:[4]
These formulae are the same as for a cylinder of length 2πR and radius r, obtained from cutting the tube along the plane of a small circle, and unrolling it by straightening out (rectifying) the line running around the center of the tube. The losses in surface area and volume on the inner side of the tube exactly cancel out the gains on the outer side.