Prove complement of element in boolean algebra is unique, Mathematics

Assignment Help:

Prove that, the complement of each element in a Boolean algebra B is unique.    

Ans:  Proof: Let I and 0 are the unit and zero elements of B correspondingly. Suppose b and c be two complements of an element a ∈ B. After that from the definition, we have 

a ∧ b = 0 = a ∧ c and

a ∨ b = I = a ∨ c 

We can write b = b ∨ 0 = b ∨ (a ∧ c )

= (b ∨ a) ∧ (b ∨ c)   [as lattice is distributive ]

= I ∧ (b ∨ c )

=  (b ∨ c )

Likewise, c = c ∨ 0 = c ∨ (a ∧ b )

= (c ∨ a) ∧ (c ∨ b)   [as lattice is distributive]

= I ∧ (b ∨ c)   [as ∨ is a commutative operation]

=  (b ∨ c)

The above two results define that b = c.


Related Discussions:- Prove complement of element in boolean algebra is unique

Randy, write in factor form 9x3+9x5

write in factor form 9x3+9x5

Elli[ital paths of celestial bodies, Create a detailed diagram to describe ...

Create a detailed diagram to describe the equation of an ellipse in terms of it’s eccentricity and indicate how the foci and major and minor semi-axes are involved. Y

DECIMALS, the mass of a container is 5.81kg when full with sugar .the mass ...

the mass of a container is 5.81kg when full with sugar .the mass of container is 3.8kg when 3/8 of the sugar is removed.what is the mass of empty container

BIOMATH, Ask quHarvesting prevents the population size of a species from at...

Ask quHarvesting prevents the population size of a species from attaining its natural carrying capacity. We can add harvesting to the logistic model by assuming that the per capita

Find the generating function, Find the generating function for the number o...

Find the generating function for the number of r-combinations of {3.a, 5.b, 2.c}          Ans:  Terms sequence is given as r-combinations of {3.a, 5.b, 2.c}. This can be writte

Hello, dans chaque cas recris l expression sous la forme d un rappot reduit...

dans chaque cas recris l expression sous la forme d un rappot reduit 5kg/600g

Algebra ii, How do you graph a hyperbola?

How do you graph a hyperbola?

Find the polynomial zeros , If two zeros of the polynomial f(x) = x 4 - 6x...

If two zeros of the polynomial f(x) = x 4 - 6x 3 - 26x 2 + 138x - 35 are 2 ± √3.Find the other zeros.     (Ans:7, -5) Ans : Let the two zeros are 2 +√3 and 2 - √3 Sum of

Discrete-time signals as energy or power signals, Classify the following di...

Classify the following discrete-time signals as energy or power signals. If the signal is of energy type, find its energy. Otherwise, find the average power of the signal. X 1

Statistics Assignment, I need help in assignment of stats? Please give me a...

I need help in assignment of stats? Please give me assist in my stats exam.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd