## Posts

### Functions

Definition
Let A and B be two subsets of ℝ
A relation from A to B is a rule which assigns a member of B to each member of A.
Definition
Let A and B are two subsets of ℝ
A function from A to B is a rule which assigns a unique member of B of each number of A.

This is my very first blog. Learning and implementing about blogging and discovering it's trends, basically this blog will help anyone out with Mathematics, Python Programming Fundamentals at the university level.
Mathematics will cover Logic and Set Theory [Propositions, Quantifiers, Techniques of Proof, Sets, Relations, Functions], Real Analysis [Intervals, Supremum and Infemum, Completeness Axiom, Limit of a Function, Differentiability, Rolle’s Theorem, L’ Hospital’s Rule, Sequences, Convergence of Series: Ratio Test, Comparisons Test, Limit Comparison Test, Maclaurine’s Integral Test; Taylor’s Series, Integration of Continuous Functions, Definite and Indefinite Integrals], Complex Numbers, Vectors, and Matrices [Algebra of Complex Numbers, De Moriver’s Theorem, Argand Diagram, Vector Algebra, Scalar Triple Product, Vector Triple Product, Line and Plane, Matrix Algebra, Echelon Forms, Rank, Determinants, Eigen Values, Spectral Radius, Matrix Norms: Maximum Row Sum, Maximum Co…

### Intervals

Defenition
Let A ≤ R; A is said to be an interval if following condition is satisfied.

If a, b ∈ A with a < b, then
a < x < b ⇒ x ∈ A

Eg: A = {1, 2, 3, 4}
2, 3 ∈ A & 2 < 2.5 < 3 & 2.5 ∉ A

Therefore A is not an interval

### Inequalities

Definition
ℝ+ = {a | a ∈ ℝ and a is located to the R.H.S. of 0 in the number line}
ℝ- = {a | a ∈ ℝ and a is located to the L.H.S. of 0 in the number line}
{0} = The single point 0
Then, ℝ = ℝ- ∪ {0} ∪ ℝ+

### Irrational Numbers

In mathematics, an irrational number is any real number that cannot be expressed as a ratio of integers. Informally, this means that an irrational number cannot be represented as a simple fraction. Irrational numbers are those real numbers that cannot be represented as terminating or repeating decimals. As a consequence of Cantor's proof that the real numbers are uncountable(and the rationals countable) it follows that almost all real numbers are irrational.
Note: ∃ a (There is...)∃ a1, a2, a3 ... (There are...)

### Creating Tabs in Blogger

In Blogger, there is no inbuilt option to create tabs. So we're using a tricky way to create tabs. It is actually Labels that are playing the role of tabs here and we're simply displaying those labels in the form of tabs. I think now you get the picture of what's going to happen here. I'll bring it down step by step.

### Edit CSS in Blogger!!!

Before getting started, let me introduce you to CSS.CSS is Cascading Style Sheets which is a style sheet language used for describing the look and formatting of a document written in a markup language. While most often used to change the style of web pages and user interfaces written in HTML and XHTML. Along with HTML and JavaScript, CSS is a cornerstone technology used by most websites to create visually engaging webpages, web applications and user interfaces for many mobile applications.