New posts in martingales

Convergent hyperbolic cosine martingale $X_n = \frac{\text{exp} \big (\sum_{j=1}^n a_j Y_j \big )}{\prod_{j=1}^n \text{cosh}(a_j)}$, $Y_n$ Rademacher

NON-martingale approach to ABRACADABRA problem

Example: satisfying $E(X_{n+1}\mid X_n)=X_n$ but not a martingale

Monkey typing ABRACADABRA and gamblers

Maybe a Monty Hall kind of problem?

Filtration and martingale from definition

Prove $A_t := W_t^3-3t W_t$ a martingale

Martingale not uniformly integrable

Does law of large numbers converge in $L^1$?

Bounded (from below) continuous local martingale is a supermartingale

Proof of a maximal inequality

Is there a discrete-time analogue of Doléans-Dade exponential?

Is it true $P(\sup_{k \in \mathbb{N}}X_k \geq \epsilon +x)=\dfrac{x}{\epsilon+x}$?

Recursive martingale

Filtration and measure change

Can you make money on coin tosses when the odds are against you?

What are some easier books for studying martingale?

If $(X_n)_{n\in \mathbb{N}}$ is a martingale s.t. $\sup_n E[|X_n|]\leq M < \infty$, then $\sum_{n\geq 2}(X_n-X_{n-1})^2<\infty$ almost surely.

Relation between Hermite polynomials and Brownian motion (on martingale property) [duplicate]

Limit of expectations on increasing sigma algebra converge to expectation on limit sigma algebra