# Several ways to apply a (multivalued) multiargument function to a family of filters

**Problem**Let be an indexed family of filters on sets. Which of the below items are always pairwise equal?

1. The funcoid corresponding to this function (considered as a single argument function on indexed families) applied to the reloidal product of filters .

2. The funcoid corresponding to this function (considered as a single argument function on indexed families) applied to the starred reloidal product of filters .

3. .

## Bibliography

See Algebraic General Topology for definitions of used concepts.

* indicates original appearance(s) of problem.

### The error was more severe

On January 15th, 2020 porton says:

The first item of the problem was entirely wrong. I removed it.

-- Victor Porton - http://www.mathematics21.org

## There was an error in the problem statement

I did an error in the problem statement (corrected). We need to consider the upgraded staroid, not just staroid.

-- Victor Porton - http://www.mathematics21.org