# Category: Basic

## Manipulation of Sums Using the Sigma Symbol

Manipulation of sums via the symbol (sigma), is based on a small number of rules. The purpose of this article is to list them and give examples of their use, without any claim to originality. Sigma To begin, let’s ask about the interest of the notation . 1 – Abandonment of the Suspension Points Reading the

## Intersection, Meeting / Union, Contrary – Mathematics

Today, I will post about intersection, meeting / union, and contrary. Used set theory in probability. Objectives: In this course, we will learn our knowledge of probabilities. What does the intersection or meeting of two events represent? What does the opposite event mean? These are the three topics we will discuss in this sheet. Intersection of Two Events

## The Definition in Mathematics

Why define? How to communicate and teach them? It is certainly familiar to you that a mathematics course usually starts with a number of definitions. These definitions then serve to demonstrate first properties (for example computational relations) which are then used to prove theorems. definition mathematics The theorems and propositions are then in a mathematical movement, they are

## Sets According to Cantor, Basic Vocabulary The Logical and Contradictory Aspects (Set Theory)

Today, I will give a litte bit about basic of cantor set theory. What is a set? According to Cantor, it is “a plurality (of objects) that can be thought of as a unit, in other words any collection of pecific objects that can be united as a whole by a law (a criterion)“. cantor

## 2=1? Is that true?

Often we see the evidence mathematically that 2=1. They show very logically. Some people who cannot know this mistake then they blindly assume that math is flawed. I believe that mathematics is one of the perfect sciences. Because until now I have not found a defect in this science. Which I love, this science is