PMC:1481596 / 33520-33683 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/1481596","sourcedb":"PMC","sourceid":"1481596","source_url":"https://www.ncbi.nlm.nih.gov/pmc/1481596","text":"Proof The argument follows from Figure 5. Indeed, (v1, v2, v3, v4) is a P4 in the original graph if and only if (v3, v1, v4, v2) is a P4 formed by the added edges.","tracks":[]}