What is Reflexive Property? Know About Symmetric, Transitive, and Substitution Properties

Reflexive Property

All the math geniuses must have heard about the reflexive property. It states that any value is equal to itself. To understand this concept you can have a look at yourself in the mirror. You will see your reflection. This is the reflexive property of equality the same as when the number looks across its equal sign.

So reflexive means a number relating to itself. That is why in Algebra the reflexive property of equality says that the number is equal to itself. Also, this property states that it applies for all real numbers, x = x. You can find all the details about Reflexive property here. 

What is reflexive property? 

The binary relations are called either reflective or anti-reflexive if they do not relate to any element in itself. One example of this is the greater than relation (x > y) with the real numbers. Not every relation that is not reflexive can be considered irreflexive. Also, it is possible to explain the relations that have some elements related to themselves but others are not. This means either all or none are. For instance, in the binary relation, the value of x and y can be considered as reflexive in the even numbers. But they will be irreflexive in the set of odd numbers. Also, they will be neither reflexive nor irreflexive in the groups of natural numbers. 

In relation ~ on the groups of x is called quasi-reflexive. If each element similar to some element is also related to itself and this is x, y X: x ~ y (x ~ x y ~ y). One example is the relation that has the same limit as sequences of real numbers. Also, not all the sequences will have a limit. So the relation is not reflexive but if the sequence has a similar limit then it will result in having the same limit as itself. Further, it is right to differentiate between left and right quasi-reflexivity. This can be explained by x, y X: x ~ y x ~ x and x, y X: x ~ y y ~ y. For instance, the left Euclidean relation will always be on the left. 

On the other hand, the relation in the group of x will be considered as reflexive if the x and y in X have x ~ y then x = y. One example of this is reflexive relation which is a relation on integers. Each odd number in it is related to itself. Further, there are no relations. The equality relation is the only instance of both the reflexive and reflexive relation. Also, the union of a coreflexive and the transitive relation will always be transitive. 

The reflexive property of equality is important in the field of mathematics. That is why many formulas in it make people agree with the reflexive property of equality. With these kinds of properties only can we prove that statements like x < x are false.

What are real numbers? 

The real numbers are the ones that are part of the number line. They contain rational as well as irrational numbers. Rational numbers are those that can be written as a fraction. But the irrational numbers are real numbers that cannot be considered a simple fraction. Also, the square roots will be part of this category. The real numbers entail as many numbers as possible but they leave out the negative square roots as they are imaginary numbers. 

So the reflexive property of equality entails lots of values and numbers. Also, any value or number is equal to itself. 

Reflexive property in geometry 

In geometry, the reflexive property is known as the reflexive property of congruence. This states that the geometry figure is congruent to itself. This means that the line segment has the same length as an angle measure. Also, the geometric figure has a similar shape and size. 

Why is the reflexive property vital? 

The reflexive property can be used in the algebraic manipulations of equations. For instance the reflexive property aids in the multiplication property of equality that permits one to multiply the sides of the equation in the same number. 

What is involved in the reflexive property of equality? 

  • Reflexive Property

The reflexive property says that the real number is xx, x=xx=x. 

  • Symmetric property 

The symmetric property says that the real numbers are x and yx and y ,

If x=yx=y, then y=xy=x.

  • Transitive property 

The transitive property says that the real numbers are x, y, and z, x, y, and z,

If x=yx=y and y=zy=z, then x=zx=z.

  • Substitution Property

In the substitution property if x=yx=y then the value xx may be replaced by the yy in any equation. 


These are the many aspects of reflexive property.  It is a really helpful property in maths and many people like to know the ins and outs of it.

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