The unification problem in a normal modal logic is to determine, given a formula φ, whether there exists a substitution σ such that σ(φ) is in that logic. In that case, σ is a unifier of φ. We shall ...

Modal is a semi-synthetic fabric adored for its softness, ease of care, and—more importantly—biodegradability. Because the fabric is quite breathable, it is often used in garments designed for comfort ...

In the real world, multiple types of modal information originate from the external environment and interrelate to form a whole. Multi-modal data fusion technology integrates data from diverse sources ...