The censor without, the censor within: the resistance of Johnstone’s improv to the social and political pressures of 1950s Britain

Keith Johnstone's improv, popularly known through the Theatresports format, was forged in the cultural and historical context of 1950s Britain. In this paper I will argue that Johnstone's incarnation of theatrical improvisation was defined by its reaction to the normalising forces exerted by the social elite upon the broader population and by civilised society upon the individual. Johnstone's improv was a reaction against the Lord Chamberlain’s power to censor the British stage and a challenge to the internalised 'censor' British society of the time implanted in the minds of his students, stunting their creative imaginations. Johnstone borrowed elements of professional wrestling to break down the regimented conventions of the theatre space and enliven the spectator-performer relationship. As well as echoing Roland Barthes’ idealistic analysis of professional wrestling (Barthes, 1984: n.p.), Johnstone’s improv shares Barthes’ critique of the authority of the author and allows meaning to be generated out of the encounter between performers and spectators in the instant of the performance’s emergence. Through these processes, Johnstone’s improv defies the censor without (The Lord Chamberlain) by rooting out the censor within (the socially learnt inhibitions to the creative imagination). By delineating the political and social pressures at play in the historical context of 1950s Britain and the ways that the stylistic conventions of Johnstone's improv resist and subvert these forces, I will demonstrate the emancipatory power latent in this mode of popular performance. This is a particularly timely analysis given the increasing authority of free market economics to dictate what appears on contemporary British stages, and the internalised censor that panoptical CCTV and social media is implanting within the minds of British citizens today

The spontaneity drain: the social pressures that shaped and then exiled Keith Johnstone's improvisation

Keith Johnstone’s Improvisation had an oppositional relationship to the social and historical conditions of 1950s Britain under which it developed. Its structure and performative dynamic were protests against the normalising forces exerted by the social elite upon the broader population and by civilised society upon the individual. Within this context, the Royal Court Theatre acted as an incubator that allowed Johnstone to develop his subversive theories of performance, drawing on elements of professional wrestling to break down the regimented conventions of the theatre space and enliven the spectator-performer relationship. Eventually Johnstone entered a self-imposed exile from the society that shaped this form of performance and established The Loose Moose Theatre in Calgary, Canada. This paper will analyse three relationships vital to this narrative: The oppositional reaction of Johnstone's improvisation to the social pressures of 1950's Britain, the creative glasshouse that The Royal Court Theatre provided for Johnstone within this broader cultural context, and the effects that the new social situation of Calgary, Canada had on Johnstone's practice. At the conclusion of the paper I will draw out the consequences of these analyses for contemporary British society and attempt to identify the normalising forces at work within this context, how our arts institutions and creative incubators might foster novel reactions to these pressures, and how public policy might be shaped in order to encourage artists to remain in Britain so that we might benefit from their continued contribution to our cultural discourses

Three Flavor Neutrino Oscillations in Matter: Flavor Diagonal Potentials, the Adiabatic Basis and the CP phase

We discuss the three neutrino flavor evolution problem with general, flavor-diagonal, matter potentials and a fully parameterized mixing matrix that includes CP violation, and derive expressions for the eigenvalues, mixing angles and phases. We demonstrate that, in the limit that the mu and tau potentials are equal, the eigenvalues and matter mixing angles theta_12 and theta_13 are independent of the CP phase, although theta_23 does have CP dependence. Since we are interested in developing a framework that can be used for S matrix calculations of neutrino flavor transformation, it is useful to work in a basis that contains only off-diagonal entries in the Hamiltonian. We derive the "non-adiabaticity" parameters that appear in the Hamiltonian in this basis. We then introduce the neutrino S matrix, derive its evolution equation and the integral solution. We find that this new Hamiltonian, and therefore the S matrix, in the limit that the mu and tau neutrino potentials are the same, is independent of both theta_23 and the CP violating phase. In this limit, any CP violation in the flavor basis can only be introduced via the rotation matrices, and so effects which derive from the CP phase are then straightforward to determine. We show explicitly that the electron neutrino and electron antineutrino survival probability is independent of the CP phase in this limit. Conversely, if the CP phase is nonzero and mu and tau matter potentials are not equal, then the electron neutrino survival probability cannot be independent of the CP phase

Polynomial Solutions to Pell\u27s Equation and Fundamental Units in Real Quadratic Fields

Finding polynomial solutions to Pell’s equation is of interest as such solutions sometimes allow the fundamental units to be determined in an infinite class of real quadratic fields. In this paper, for each triple of positive integers (c, h, f) satisfying c 2 − f h2 = 1, where (c, h) are the smallest pair of integers satisfying this equation, several sets of polynomials (c(t), h(t), f(t)) which satisfy c(t) 2 − f(t) h(t) 2 = 1 and (c(0), h(0), f(0)) = (c, h, f) are derived. Moreover, it is shown that the pair (c(t), h(t)) constitute the fundamental polynomial solution to the Pell’s equation above. The continued fraction expansion of p f(t) is given in certain general cases (for example, when the continued fraction expansion of √ f has odd period length, or even period length or has period length ≡ 2 mod 4 and the middle quotient has a particular form etc). Some applications to determining the fundamental unit in real quadratic fields is also discussed