Norman Steenrod characterized Lefschetz ' impact as editor as follows :" The importance to American mathematicians of a first-class journal is that it sets high standards for them to aim at.

* Norman Steenrod

In 1936 Norman Steenrod published a paper constructing Čech cohomology by dualizing Čech homology.

He worked on the axiomatic treatment of homology theory with Norman Steenrod ( whose names the Eilenberg – Steenrod axioms bear ), and on homological algebra with Saunders Mac Lane.

* Samuel Eilenberg & Norman E. Steenrod, Axiomatic approach to homology theory, Proc.

* Samuel Eilenberg & Norman E. Steenrod, Foundations of algebraic topology, Princeton University Press, Princeton, New Jersey, 1952. xv + 328 pp.

* Norman Steenrod, The Topology of Fibre Bundles, Princeton University Press ( 1951 ).

The concept of an exact sequence only appeared in print in the 1952 book Foundations of Algebraic Topology by Samuel Eilenberg and Norman Steenrod where the results of Mayer and Vietoris were expressed in the modern form.

# REDIRECT Norman Steenrod

Norman Earl Steenrod ( April 22, 1910October 14, 1971 ) was a preeminent mathematician most widely known for his contributions to the field of algebraic topology.

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The term is believed to have been coined by the mathematician Norman Steenrod, himself one of the developers of the categorical point of view.

The origin of these studies was the work of Pontryagin, Postnikov, and Norman Steenrod, who first defined the Pontryagin square, Postnikov square, and Steenrod square operations for singular cohomology, in the case of mod 2 coefficients.

The city was quarried for building material when medieval St Albans was founded ; indeed, much of Norman abbey was constructed from the remains of the Roman city, with Roman brick and stone visible.

In the period immediately after the Norman Settlement was constructed the barrier, known as the " Pale ," separating the lands occupied by the settlers from those remaining in the hands of the Irish.

The wide nave was constructed from the 1280s on the Norman foundations.

It was originally constructed in the 10th century by Theobald I, Count of Blois, as a fortified stronghold against Norman predations.

The Norman keep, of which the shell remains, was constructed about 1091 by Robert Fitzhamon, lord of Gloucester and conqueror of Glamorgan.

Those parts of the Norman church east of the Norman crossing were demolished, and a new church, with its own nave, a second pair of transepts and a further tower at the new crossing were constructed.

Some of these castles were deliberately built on top of important local buildings, such as the burhs or halls of local nobles, and might be constructed so as to imitate aspects of the previous buildings – such as the gatehouse at Rougemont Castle in Exeter, which closely resembled the previous Anglo-Saxon burh tower – this was probably done to demonstrate to the local population that they now answered to their new Norman rulers.

Historically a part of the West Riding of Yorkshire, Skipton was anciently distinguished by Skipton Castle, constructed in 1090 as a wooden motte-and-bailey by Robert de Romille, a Norman baron.

A motte and bailey castle had been constructed on the site at some time in the century following the Norman Conquest of England in 1066.

Following the Norman Conquest the town came into the possession of the de Merlay family, and a motte and bailey castle had been constructed by 1095.

The ringwork which remains almost intact and surrounded the original manor house is thought to have been constructed shortly after the Norman Conquest.

At the time of the Norman Conquest, Gillingham was a small hamlet ; It was given to his half-brother, Odo, Bishop of Bayeux which rebuilt the Parish Church at Gillingham and constructed an Archbishop ’ s Palace on land bordered by Grange Road, the ruins of which could still be seen last century.

Though the Tump, believed to be the remains of an early Norman motte and bailey castle, can be seen from the main road ( A456 ) there are no visible remains of the castle, which was constructed to defend and control the original River Teme crossing.

The dykes aside, two Norman castles, constructed in the 12th century, are the oldest survivors in modern Knighton.

The castle was first constructed in approximately 1070 by Ilbert de Lacy on land which had been granted to him by William the Conqueror as a reward for his support during the Norman conquests.

The Norman St Clears Castle was constructed in the twelfth century ( the castle mound can still be seen ) and the town, which was a Marcher Borough, grew around it.

In 2005, a statue showing Smith and Carlos on the medal stand ( but not Norman, whose silver medal position is vacant ) was constructed by political artist Rigo 23 and dedicated on the campus of San Jose State University.

The building is constructed of red Seneca sandstone in the faux Norman style ( a 12th-century combination of late Romanesque and early Gothic motifs ) and is appropriately nicknamed The Castle.

Following the invasion Normans rapidly constructed motte-and-bailey castles, and in a burst of building activity built churches and abbeys, as well as more elaborate fortifications including Norman stone keeps.

* There is a Norman motte in the town which may have been constructed on an earlier burial mound.

The original Cosmeston village grew around a fortified manor house constructed sometime around the 12th century by the De Costentin family, who were among the first Norman invaders of Wales in the early 12th century following William the Conqueror's invasion of neighbouring England in 1066.

With the discovery of oil at Norman Wells, a federal government administration building was constructed to house the new Northwest Territories Branch and the first Court of Justice in the Mackenzie District.

* Church of the Trinity: Primitive Norman Gothic style, constructed from 1175 to 1220 with some Roman traces.

Many other Norman castles were subsequently constructed throughout the county of Cheshire in order to maintain the peace and to exert control over the disenchanted population of the region who bitterly hated their Norman overseers for many generations.

Patton even read The Norman Conquest by Edward A. Freeman, " paying particular attention to the roads William the Conqueror used in his operations in Normandy and Brittany.

On 22 January, the RAF director of bomber operations, Air Commodore Sydney Bufton, sent a memo to the Deputy Chief of the Air Staff, Air Marshal Sir Norman Bottomley, suggesting that what appeared to be a coordinated air attack by the RAF to aid the current Soviet offensive would have a detrimental effect on German morale.

In March 1955, the Army colonel was " replaced with a more permanent team of five career CIA officers, including specialists in covert operations, intelligence analysis, and counterintelligence, including Major General Herbert Norman Schwarzkopf who " trained virtually all of the first generation of SAVAK personnel.

In an attempt to overcome the mobility constraints of the bocage that had made offensive operations so difficult and costly for both sides, " Rhino " modifications were made to some M4 Sherman and M5A1 Stuart tanks, and M10 tank destroyers, by fitting them with hedge-breaching ' tusks ' that were capable of forcing a path through the Norman hedgerows.

The route network and operations that were left under the control of Loganair, with aircraft including one De Havilland Canada DHC-6 Twin Otter and five Britten Norman Islanders, were subject to a management buy-out in 1997.

These early operations mined veins such as the Zaragoza and Balmaceda, which were high grade with values up to 10-15 % copper, and disregarded the low grade disseminated ore. One attempt was made to process the low grade ore in 1899-1900 by Norman Walker, a partner in La Compañia de Cobres de Antofagasta, but it failed leaving the company deeply in debt.

Hammerhead later gives Montana the equipment to become Shocker and contacts Norman Osborn to make him an offer on behalf of Big Man: make supervillains to distract Spider-Man from Big Man's operations.

* Barry Newman as Norman Bassett, the tunnel operations supervisor

However mining on any scale did not start until the later years of the XIX Century and these early operations mined the high grade veins ( 10-15 % copper ) and disregarded the low grade disseminated ore. One attempt was made to process the low grade ore in 1899-1900 by Norman Walker, a partner in La Compañia de Cobre de Antofagasta, but it failed leaving the company deeply in debt.

Clearstream often has been described as a bank for banks, as it practices what is called settlement and custody operations (" Plumbers and Visionaries, a history of settlement and custody in Europe ", Peter Norman ).

In mid-July 1944, the First United States Army became stalled in its operations in the Norman bocage.

After a transfer from the Flying Squad to the Drug Squad in 1967, Norman ‘ Nobby ’ Pilcher became notorious for the vigour with which he pinned possession of drugs charges on pop stars and hippies, and for the dubious methods employed in his undercover operations, which included paying off informers with drugs.

Roaring Camp Railroads operations began in 1963 under the guidance of F. Norman Clark ( 1935 – 1985 ), who was the founder and owner.

The battalion began planning a new operation, tentatively called Operation Stars, which was named after the Dallas Stars professional hockey team ( 3 / 3's battalion commander, Lieutenant Colonel Norman Cooling, hailed from Texas, hence most operations being named after Texas sports teams ).