B

• Bilinear maps‎ (1 C, 20 P)

G

• Generalizations of the derivative‎ (2 C, 32 P)

I

• Integral transforms‎ (2 C, 56 P)

L

• Linear functionals‎ (1 C, 22 P)
• Linear operators in calculus‎ (17 P)

M

• Matrices‎ (3 C, 233 P)

T

• Transforms‎ (5 C, 52 P)

U

• Unitary operators‎ (10 P)

• Conformal linear transformation
• Linear map

B

• Blackwell's contraction mapping theorem
• Bounded operator

C

• Compact operator
• Compact operator on Hilbert space
• Continuous linear extension
• Continuous linear operator
• Cyclic and separating vector

D

• Densely defined operator
• Dissipative operator

E

• Extensions of symmetric operators

F

• Fredholm kernel
• Fredholm operator
• Friedrichs extension

H

• Hilbert–Schmidt integral operator
• Hilbert–Schmidt operator
• Hyponormal operator

I

• Integral linear operator

L

• Limiting absorption principle
• Limiting amplitude principle
• Linear form
• Linear Operators (book)

M

• Markov operator
• Motzkin–Taussky theorem

N

• Normal operator
• Nuclear operator
• Nuclear operators between Banach spaces

O

• Operational calculus

P

• Paranormal operator
• Projection (linear algebra)

Q

• Quasinormal operator

R

• Reflection (mathematics)
• Rotation (mathematics)

S

• Self-adjoint operator
• Semilinear map
• Spectral theory of compact operators
• Strictly singular operator
• Subnormal operator

T

• Toeplitz operator
• Trace class

U

• Unbounded operator
• Unitary operator