Researchers from the University of Bologna compared seal designs and proto-cuneiform signs ... resurfaced with a thorough analysis of symbols and writing, and necessity might have spawned ...

Symbol equations always take the form, reactants → products. A + sign separates two or more reactants or products. State symbols are used in symbol equations to show whether each chemical is a ...

The world's oldest known system of writing was influenced ... According to the researchers, several symbols engraved on stone "cylinder seals" were developed into signs used in "proto-cuneiform ...