**PTAS** or **Ptas** may refer to:

- Polynomial-time approximation scheme in computer science
- Power & Thermal Aware Scheduling in computer science
- Pesetas, Spanish currency
- PTAS reduction, a reduction that is often used to perform reductions between solutions to optimization problems

### Other articles related to "ptas, pta":

Parent-Teacher Association -

2007" found that 83 per cent of primary schools, and 60 per cent of secondary schools had a "

**PTAs**in The United Kingdom2007" found that 83 per cent of primary schools, and 60 per cent of secondary schools had a "

**PTA**or equivalent" ... In England, Wales and Northern Ireland**PTAs**may choose to join**PTA**-UK which describes itself as "The national charity representing over 13,750**PTAs**across England, Wales and Northern Ireland" which seeks "To advance ... The Scottish Parent Teacher Council"**PTAs**are, in general not involved in the Governance of Schools, that is a matter for the school governing bodies, but in practice parents who are active in the**PTA**will tend to ...**PTAS**Reduction

... In computational complexity theory, a

**PTAS**reduction is a reduction that is often used to perform reductions between solutions to optimization problems ... It preserves the property that a problem has a polynomial time approximation scheme (

**PTAS**) and is used to define completeness for certain classes of ... Notationally, if there is a

**PTAS**reduction from a problem A to a problem B, we write ...

Passenger Transport Executive - History

... The first PTEs and

... The first PTEs and

**PTAs**were established in the late 1960s by the Transport Act 1968 as transport authorities serving large conurbations, by the then ... The 1974 reorganisation also abolished the**PTAs**, and their role was taken over by the Metropolitan county councils (MCCs) ... However when the MCCs were abolished in 1986, the**PTAs**were re-created ...APX

... to have a polynomial-time approximation scheme (

... to have a polynomial-time approximation scheme (

**PTAS**) ... can be shown that there are problems that are in APX but not in**PTAS**that is, problems that can be approximated within some constant factor, but not every constant factor ... A problem is said to be APX-hard if there is a**PTAS**reduction from every problem in APX to that problem, and to be APX-complete if the problem is APX-hard ...Main Site Subjects

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