[`päz·ǝd·iv ¦sem·i`def·ǝ·nǝt]
MATHEMATICS 1. Also known as nonnegative semidefinite.
2. A square matrix A is positive semidefinite if
for every choice of complex numbers x1, x2, ..., xn , where x̄j is the complex conjugate of xj . 3. A linear operator T on an inner product space is positive semidefinite if 〈Tu,u〉 is equal to or greater than 0 for all vectors u in the space.
- electrical length
- electrical loading
- electrical log
- electrical logging
- electrically active fluid
- electrically alterable read-only memory
- electrically connected
- electrically erasable programmable read-only memory
- electrically suspended gyro
- electrical measurement
- electrical model
- electrical noise
- electrical oil
- electrical porcelain
- electrical potential energy
- electrical pressure transducer
- electrical properties
- electrical prospecting
- electrical resistance
- electrical-resistance meter
- electrical-resistance strain gage
- electrical-resistance thermometer
- electrical resistivity
- electrical resistor
- electrical resonator