Some relationships have been expressed through symbols which are explained below :

o = greater than

Δ = not equal to

× = not less than

+ = equal to

φ = not greater than

∇ = less than

a ∇ b ∇ c implies

$a \nabla b \nabla c$

⇒ a < b < c

Option (1)

a Δ b φ c ⇒ a > b < c or,

$a

Option (2)

$a \phi b+c \Rightarrow a \leq b=c$

Option (3)

a 0 b + c ⇒ a > b = c

Option (4) a $0 b \times c \Rightarrow a>b \geq c$