Maths: Complex Numbers

The first of five weeks of lunch time specials for the Open University.
This week looks at the prize-winning programmes and those with appeal to general audiences.
12.30 Composer and Audience: Tippett and Sondheim
An opportunity to look in on two composers - one from opera, one from musicals. Catch their music and views on composers, performers and audience.
12.55 Going Round in Circles
At Jaguar, quality and survival have come to mean very much the same thing. But where exactly do 'quality circles' fit into the picture?

by PETER FIRMIN
Pinny and the Honey Bees (R)

A See-Saw programme. (R)

Weather followed by Songs of Praise
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A series of sixprogrammes presented by Bryn Campbell 5: Urban Landscapes
This programme shows how photographers have tried to record the environment. Producer PETER RIDING (R)

Weather followed by One Man and His Dog Introduced by Phil Drabble and Eric Halsall First Semi-final
The 1984 Welsh National
Champion and the reigning
English Shepherds' Champion meet on the trials course at
Chatsworth for a place in the singles final. For Wales: JACK BURKE with Hemp
For England: JOHN THOMAS with Don. The Brace
Championship begins today. For Scotland: JOHN MACLEOD with Ben III and Cap
For Ireland: JOHN BREEN with Matty and Judy Producer IAN SMITH (R)

The classic medical drama series depicting the life of a young doctor in a big city hospital.
A seven-part serial 3: Wives and Losers
The emotional strain of the selection process begins to show as Kildare is forced to restrain a desperate Steve Perrona and then learns that Morrison has mysteriously checked himself out of the hospital. (Part 4 tomorrow at 4.00pm) (R)

Feathers with Bird Attached Second of three programmes with Bill Oddie in Papua New Guinea.
Bill continues his search higher into the mountains where rhododendrons and kangaroos live up trees. The birds of paradise have incredibly long head and tail feathers and there's one that's coloured like lemon meringue pie. He finds a parrot-like vulture, and a bower-bird that decorates its bower with red and blue berries. And, even more amazing, some of his photos actually came out!
Producer RICHARD BROCK BBC Bristol (R)

I Another classic murder mystery starring detective.
With Pat Paterson Stepin Fetchit
'Theory like mist on eyeglasses, obscures facts' - Nevertheless Chan sees his way clear to investigate this vintage brew of missing
Egyptian artefacts, tombs and long-dead high priests, together with a plethora of strange supporting characters, occidental and oriental, helping to fog the plot.
Screenplay by ROBERT ELLIS and HELEN LOGAN Produced by EDWARD T. LOWE Directed by LOUIS KING
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Luther Vandross is undoubtedly one of the most exciting singer/songwriters to emerge in the 1980s and four of his previous LPs have sold a million.
This concert was recorded last year during a sell-out week at Wembley Arena, London.
Producer JOHN G. SMITH
A WHITE RABBIT production for BBCtv (R)

Magenta De Vine and Sankha Guha go to Ljubljana in Yugoslavia, and find fewer differences than they might have supposed. While the city is in political ferment, the young people have the same preoccupations as those in the rest of Europe - music, fashion, style and survival. Sankha meets the grandees of the largest arts movement, NSK, and Magenta hears how to avoid conscription.
Director Josh Halil
Series producer Rachel Purnell BBC North West
For a booklet containing further information, please send crossed cheque/postal order for £1.50 made payable to: [address removed]

BBC2 Invitation Pairs Crown Green Bowling Tournament The Final
For the first time in Top
Crown's history, the North Midlands have made the final, in the shape of PETER VARNEY and BOB GILFILLAN. But the Coventry men face daunting opposition. KEN STRUTT and TOMMY HEYES demolished the 1986 champions BRIAN DUNCAN and NORMAN FLETCHER in last week's semi-final, and look unstoppable. Again there'll be new names on a trophy which so far has never been won twice by the same pairing. To the winners - E2,000 and trophy.
Richard Duckenfield introduces the evening from the Mitchell and Butlers Sports and Social Club, in Birmingham.
Commentator HARRY RIGBY Director PETER HAYWARD Producer KEITH PHILLIPS BBC North West

A series of eightprogrammes 5: Leopard Tracks by the Dead Sea
Leopards by the Dead Sea in Israel is no joke! Someone obviously thought it was, when they added a PS to a notice warning about leopards: 'Why not "Danger - polar bears?"' The leopard was long thought to be extinct in the region of Judea until one, driven by hunger, entered a kibbutz at En Gedi. Sadly, it was shot. Ever since that encounter, Israeli zoologist, Giora Ilany has been obsessed with finding out everything about these secretive big cats. This film is an account of Ilany's quest. Photographed and directed by RUDOLF LAMMERS
Presented for BBCtv by GEORGEINGER
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Continuing the season of films made specially for television. Starring
Margot Kidder
David Ackroyd
James Farentino
All Linette wanted was a civilised, simple divorce. But her husband, vindictive, jealous and obsessive, has made sure she isn't going to get one. The bank account is closed, the credit cards cancelled and the house stripped of furniture. And there are three children to bring up who, like the mother, are used to the best. But Linette isn't going to let him get away with it. The fight is on! Screenplay by GORDON COTLER Produced by DOROTHY PETRIE Directed by PAUL WENDKOS
(First showing on British television)
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Peter Snow and Donald MacCormick with the day's top stories and the background on events making the news at home and abroad. With international reports by DAVID SELLS
CHARLES WHEELER , GAVIN ESLER and JULIAN O'HALLORAN Assignment editors
NIGEL CHAPMAN. NICK GUTHRIE Deputy editor MIKE ROBINSON Editor JOHN MORRISON

Holidays by the Sea looks at Blackpool, from its small genteel origins, to its becoming the first and largest working-class resort. Producer CHARLES COOPER (R)