import { Observable } from 'rxjs';
import { $ } from '../e';
export { neg, inv } from '../number';
export declare function add(a: $<number>, ...nums: $<number>[]): (o: Observable<number>) => Observable<number>;
export declare function sub(a: $<number>, ...nums: $<number>[]): (o: Observable<number>) => Observable<number>;
export declare function mul(a: $<number>, ...nums: $<number>[]): (o: Observable<number>) => Observable<number>;
export declare function div(a: $<number>, ...nums: $<number>[]): (o: Observable<number>) => Observable<number>;
export declare function mod(a: $<number>, ...nums: $<number>[]): (o: Observable<number>) => Observable<number>;