**Daily update | 17 April, 2022**

# StackExchange

#### What is the probability a person sees a tree by looking out of the window?

**Source:** stats**Views:** 389**Score:** 5**Tags:** probability

#### Does the Absence of a Unit Root Imply Wide Sense Stationarity?

**Source:** stats**Views:** 17**Score:** 2**Tags:** stationarity garch unit-root

#### What role is the set, $S$ playing in Dijkstra's algorithm given in the book CLRS?

**Source:** cs**Views:** 22**Score:** 2**Tags:** graphs shortest-path graph-traversal dijkstras-algorithm

#### First-order model checking is not fixed parameter tractable on general graphs

**Source:** cs**Views:** 15**Score:** 1**Tags:** complexity-theory graphs first-order-logic model-checking parameterized-complexity

#### Why results based on padding generally fail to relativize?

**Source:** cs**Views:** 12**Score:** 1**Tags:** complexity-theory oracle-machines relativization