IIB Nine-branes

IIB or not IIB

IIB PP-Waves with Extra Supersymmetries

IIB Soliton Spectra with All Fluxes Activated

IIB Superfluid Flows

IIB supergravity and E10

IIB-Branes and New Spacetime Superalgebras

IIB/M Duality and Longitudinal Membranes in M(atrix) Theory

II_{\infty} Factors and M-theory in Asymptotically Flat Space-Time

Illusory Quantum Hair

Imaginary Soaring Branes: A Hidden Feature of Non-Extremal Solutions

Imaginary Sources: Completeness Conjecture and Charges

Imaginary time D-branes to all orders

Imaginary-Scaling versus Indefinite-Metric Quantization of the Pais-Uhlenbeck Oscillator

Immersions and folds in string theories of gauge fields

Impact of Dynamical Tensions in Modified String and Brane Theories

Impact of Supersymmetry on Emergent Geometry in Yang-Mills Matrix Models

Impact of supersymmetry on the nonperturbative dynamics of fuzzy spheres

Imperfect Dark Energy from Kinetic Gravity Braiding

Implementation of an iterative map in the construction of (quasi)periodic instantons: chaotic aspects and discontinuous rotation numbers