If the formula inserted in the paper is operated by the formula editor that comes with word, HowNet can identify it and calculate it into the repetition rate. However, if you insert it with a formula editor such as Mathtype, HowNet will not recognize it as a formula, and HowNet system will skip the formula directly as a picture.
The identification system of HowNet will identify and copy the conventional formulas, because these formulas are not written by themselves, but refer to the achievements of predecessors. When scanning formulas, full-text matching will be recorded as repeated plagiarism, which can be avoided by using pictures.
Extended data:
When searching for duplicates, HowNet only checks the text part, and does not check the graphics, formulas and word field codes edited by mathtype (select All-Copy-Paste Selective-Keep only the text to view the specific scope of HowNet's search for duplicates).
However, if the school detects a PDF file, the HowNet detection system will do a text processing process for the PDF file, which also verifies that the contents of the HowNet detection report are messy when the PDF file is duplicated. For the papers in PDF format, a text processing process is added, and some formulas will be recognized as texts (with more letters and numbers), so that these texts will participate in the duplicate checking of HowNet.
References:
Academic Misconduct Network-Is there a formula for checking duplicate papers on the Internet?