Ploughman's lunch Ploughman's lunch A ploughman's lunch (often abbreviated to just ploughman's) is an English cold meal which is based on bread, cheese, and onions, and usually accompanied by butter and some form of pickle. Additional items such as ham, green salad, hard boiled eggs and apple can be added. As its name suggests, a ploughman's lunch is most commonly eaten at lunchtime. The meal is particularly associated with public houses and is often accompanied with beer. Beer, bread, and cheese have been combined in the English diet since antiquity, and have been served together in inns for centuries. However, the specific
No free lunch with vanishing risk No free lunch with vanishing risk No free lunch with vanishing risk (NFLVR) is a no-arbitrage argument. We have "free lunch with vanishing risk" if by utilizing a sequence of time self-financing portfolios which converge to an arbitrage strategy, we can approximate a self-financing portfolio (called the "free lunch with vanishing risk"). For a semimartingale "S", let formula_1 where a strategy is admissible if it is permitted by the market. Then define formula_2. "S" is said to satisfy "no free lunch with vanishing risk" if formula_3 such that formula_4 is the closure of "C" in the norm topology of formula_5.