All the secrets of the universe are written in the language of mathematics. If you want to understand math, always ask yourself the question: "How am I going to explain this to aliens?". This page contains links to my articles on mathematics, where I try to understand the answers to my questions. I get some kind of new mathematics, much wider and deeper than what we know.
Natural numbers are determination  variation on a theme determination of natural numbers.
Integers determination  continuation of theme of mathematical determinations.
Transformation of trigonometric functions is a rule of direct corner  very simple rule of change of the names of trigonometric functions.
About symmetry of mathematical actions (The Papers of Independent Authors. Volume 18 of p. 110111)  whatever was talked by mathematicians about priority and secondaryness of mathematical actions, symmetry of mathematical actions is a fact that can be not noticed, but it is impossible to refute.
A theorem about parallel lines  is formulation of theorem without proof.
Decision of the undecided equalizations  if to want, then deciding is possible all, if there is though some sense in written.
Bases of mathematics (The Papers of Independent Authors. Volume 19 of p. 7898)  under such name I wrote the cycle of reasons about mathematics, that is given below:
 basic axioms of mathematics
some concepts of mathematics
some concepts of mathematics are continuation
relativity is in mathematics
number line
relativity of concept is "Any Number"
units of measurements and mathematical actions
quantity as basis of mathematics
change of corner of scale
trigonometric dependences of corner of scale
space evolution
multiplication and division by zero
More deep consideration of bases of mathematics:
Why is a zero not a number?
Law of cosines for perimeter
Law of cosines in general
In 2016 I published the following works:
Measurement of plane angles (The Papers of Independent Authors. Volume 36 of p. 4345)
Trigonometric functions in a rectangle (The Papers of Independent Authors. Volume 36 of p. 4669)
 Trigonometric functions in a rectangle. Annotation. Short analysis of trigonometric functions.
Transformations of a triangle to a rectangle. Angular symmetry in a rectangle.
Three main types of trigonometric functions.
Terminating trigonometric functions.
The infinite trigonometric functions.
Quantity.
Variable units of measure.
Multiplication.
Examples of multiplication.
Distinctions between multiplication and addition.
Zero and infinity.
Decomposition on factors.
Division.
The linear angular functions.
Addition.
Decomposition on items. Closing part. Gratitude.
Interesting questions in set theory (published on this site):
 Set theory.
Set and multiset.
Element of the set.
The formation of the set.
Set and subset.
Infinite set.
 Multiplication by zero.
Multiplication by zero and zero element.
Multiplication by zero in geometry.
Multiplication by zero in physics.
 Permutation of terms in infinite sums (The Papers of Independent Authors. Volume 54 of p. 4143).
Mathematical operations with infinite series (The Papers of Independent Authors. Volume 54 of p. 4447).
Shift in arithmetic (The Papers of Independent Authors. Volume 57 of p. 2223).
Sums classification (The Papers of Independent Authors. Volume 57 of p. 2428).

The geometry of the addition of segments
Unit size
How trigonometry works
Mathematics of bees
Custom units of measurements and custom coordinate system
Reduced base and reduced height
Pythagorean theorem
Borscht trigonometry
Division by zero