Although retained by some prominent figures who were young men in the Victorian period ( like Sigmund Freud ), most men who retained facial hair during the 1920s and 1930s limited themselves to a moustache or a goatee ( such as with Marcel Proust, Albert Einstein, Vladimir Lenin, Leon Trotsky, Adolf Hitler, and Joseph Stalin ).

Although cheap and effective in enabling use of some software that only used official ROM entry points for text output, this solution proved very slow because the Electron had to be placed into an 80-byte-pitch display to be able to get anywhere near to reproducing mode 7 and the CPU spent a lot of time drawing approximations of mode 7 characters and graphics that in a hardware solution would be achieved without any CPU processing.

Although it could be used to mark rough surfaces such as leather, as Loud intended, it proved to be too coarse for letter writing and was not commercially viable.

Although the Bolshevik leadership decided to form a separate party, convincing pro-Bolshevik workers within Russia to follow suit proved difficult.

Although blood tests proved Chaplin was not the father of Barry's child, Barry's attorney, Joseph Scott, convinced the court that the tests were inadmissible as evidence, and Chaplin was ordered to support the child.

Although a considerable quantity of equipment was seized or destroyed by US and South Vietnamese forces, containment of North Vietnamese forces proved elusive.

Although shortstop Ernie Banks would become one of the star players in the league during the next decade, finding help for him proved a difficult task, as quality players such as Hank Sauer were few and far between.

Although Babbage's design was technically feasible, no one had built a mechanical device to such exacting standards before, so the engine proved to be much more expensive than anticipated.

Although it only reached # 12 on the Billboard Hot 100, it proved to be a huge hit worldwide.

Although a few limited-production battery-powered electric vehicles have appeared, they have not proved to be competitive owing to costs and operating characteristics.

Although Abel had already proved the impossibility of a " quintic formula " by radicals in 1824 and Ruffini had published a solution in 1799 that turned out to be flawed, Galois ' methods led to deeper research in what is now called Galois theory.

Although the British industry continued to expand after its brilliant beginning, the new companies that replaced the first innovative film-makers proved unable to preserve their drive and originality.

Although much circumstantial evidence has been found to suggest that fewer different amino acids were used in the past than today, precise and detailed hypotheses about which amino acids entered the code in what order have proved far more controversial.

Although his long Livonian War for the control of the Baltic coast and the access to sea trade ultimately proved a costly failure, Ivan managed to annex the Khanates of Kazan, Astrakhan, and Siberia.

Although he rejected the transcendental / metaphysical interpretation given to these phenomena outright, Braid accepted that these accounts of Oriental practices supported his view that the effects of hypnotism could be produced in solitude, without the presence of any other person ( as he had already proved to his own satisfaction with the experiments he had conducted in November 1841 ); and he saw correlations between many of the " metaphysical " Oriental practices and his own " rational " neuro-hypnotism, and totally rejected all of the fluid theories and magnetic practices of the mesmerists.

Although Major proved " a great disappointment to Thatcher ," he was her preferred choice as successor as she expected to " continue in control of the country as a backseat driver ".

Although he was wrong in this hypothesis, his arguments led him and others to perform some of the experiments which proved chemical synaptic transmission.

Although these strong young men had proved their eligibility, their social status would be permanently controlled.

Although the first race meet proved a success, the track ran into financial difficulties and in 1894 the New Louisville Jockey Club was incorporated with new capitalization and improved facilities.

Although the First Battle of Independence in August 1862 resulted in a Confederate victory, the Southerners were unable to follow up their win in any significant fashion, as the City of Kansas was occupied by Union troops and proved too heavily fortified for them to assault.

Although the region was sparsely populated, it contained the Paraguay River, which would have given either landlocked country access to the Atlantic Ocean, and there was also speculation, later proved incorrect, that the Chaco would be a rich source of petroleum.

Although the LEDs were rather dim and not practical for use in direct sunlight, the technology proved to have major uses for alphanumeric displays and was integrated into HP's early handheld calculators.

Although this proved incorrect, it was a link he continued to explore until the early 1950s.

Although Mazda's concept was for the MX-5 to be an inexpensive sports car, the market proved extremely eager for it ; the car became an overnight novelty, resulting in many dealers placing customers on lists for pre-order due to the demand exceeding the anticipated supply.

Although Schrödinger himself after a year proved the equivalence of his wave-mechanics and Heisenberg's matrix mechanics, the reconciliation of the two approaches and their modern abstraction as motions in Hilbert space is generally attributed to Paul Dirac, who wrote a lucid account in his 1930 classic Principles of Quantum Mechanics.

Although Utopian communism is both new in 1516 and also modern, it is not modern communism or even modern socialism, as they exist or have ever existed in theory or in practice.

Although originally controversial, the axiom of choice is now used without reservation by most mathematicians, and it is included in ZFC, the standard form of axiomatic set theory.

Although the Principate continued in theory until the reign of Diocletian, Severus Alexander's death signalled the beginning of the chaotic period known as the Crisis of the Third Century which brought the empire to near collapse.

Although Grothendieck himself never published his work in this area, the proposal became the inspiration for work by other mathematicians and the source of the theory of dessins d ' enfants.

Although observations of some aerodynamic effects such as wind resistance ( e. g. drag ) were recorded by Aristotle, Leonardo da Vinci and Galileo Galilei, very little effort was made to develop a rigorous quantitative theory of air flow prior to the 17th century.

Although Zermelo's fix allows a class to describe arbitrary ( possibly " large ") entities, these predicates of the meta-language may have no formal existence ( i. e., as a set ) within the theory.

Although now debated, this theory has been the scholarly consensus for many centuries.

Although the Ezra theory is disputed, no other authorship theories are dominant.

Although this theory has the Persians moving to the strategic offensive, this can be reconciled with the traditional account of the Athenians attacking the Persians by assuming that, seeing the Persians advancing, the Athenians took the tactical offensive, and attacked them.

Although there is no strong evidence for any single theory, many independent theories exist, some blaming storms, some capsizing, and some suggesting that wartime enemy activity was to blame for the loss.

Although the perception by the public may be that the " central bank " controls some or all interest rates and currency rates, economic theory ( and substantial empirical evidence ) shows that it is impossible to do both at once in an open economy.

Although a " bijection " seems a more advanced concept than a number, the usual development of mathematics in terms of set theory defines functions before numbers, as they are based on much simpler sets.

Although Wegener's theory was formed independently and was more complete than those of his predecessors, Wegener later credited a number of past authors with similar ideas:

Although Locke did not develop a theory of natural rights, he envisioned individuals in the state of nature as being free and equal.

Although Bohr, Fowler, Pauli, and other physicists agreed with Chandrasekhar's analysis, at the time, owing to Eddington's status, they were unwilling to publicly support Chandrasekhar .< sup >, pp. 110 – 111 </ sup > Through the rest of his life, Eddington held to his position in his writings, including his work on his fundamental theory.

Although Story was highly intelligent and familiar with all the relevant English precedents, he merely summarized them in a confused fashion because he " could not conceive of a modern function or a coherent theory for representative litigation: why?

Although recognized previously by others, the mathematical expression for the Coriolis force appeared in an 1835 paper by French scientist Gaspard-Gustave Coriolis, in connection with the theory of water wheels, Early in the 20th century, the term Coriolis force began to be used in connection with meteorology.

Although many modern commentators have demurred from Hume's solution, some have notably concurred with it, seeing his analysis of our epistemic predicament as a major contribution to the theory of knowledge.

Although passive cable theory offers insights regarding input propagation along dendrite segments, it is important to remember that dendrite membranes are host to an abundance of proteins some of which may help amplify or attenuate synaptic input.

Although the theories that premise doublespeak are still indefinite, there are some theories that have parallels with the theory of doublespeak and Orwell's ideology in Nineteen Eighty-Four and might possibly provide a better understanding of where doublespeak's theories could have come from.

Although the very act of codification was a radical innovation, given the precedent-based design of the Roman legal system, the jurists were generally conservative, and constantly looked to past Roman practice and theory for guidance.

Although most of the relevant tissues and endocrine glands had been identified by early anatomists, a more humoral approach to understanding biological function and disease was favoured by the ancient Greek and Roman thinkers such as Aristotle, Hippocrates, Lucretius, Celsus, and Galen, according to Freeman et al., and these theories held sway until the advent of germ theory, physiology, and organ basis of pathology in the 19th century.

Although best known for its geometric results, the Elements also includes number theory.