Problem: In mathematics, an O*-algebra is an algebra of possibly unbounded operators defined on a dense subspace of a Hilbert space. The original examples were described by and , who studied some examples of O*-algebras, called Borchers algebras, arising from the Wightman axioms of quantum field theory. and began the systematic study of algebras of unbounded operators.

Based on the paragraph above can we conclude that "O*-algebra should be taught in schoool."? OPTIONS:
- Yes
- It's impossible to say
- No

A: It's impossible to say


Problem: How to hang a muffler<br>Purchase a new muffler hanger. Also called muffler straps, muffler hangers are thick rubber loops. Your exhaust system may require more than 1 hanger, so look underneath the car to see if it requires any additional muffler hangers.

Based on the paragraph above can we conclude that "Mufflers only require one metal hanger."? OPTIONS:
- Yes
- It's impossible to say
- No

A: No


Problem: How to grow kale indoors<br>Fill seed trays with a soil-less growing medium. Purchase seeds trays for germination with drainage holes on the bottom. Fill each seed container in the tray with 3-4 inches of soil-less growing mix.

Based on the paragraph above can we conclude that "Drown the soil in vinegar"? OPTIONS:
- Yes
- It's impossible to say
- No

A: