Subtractive Notation Rule Violation Detector (IIII vs IV)
List violations of the classical subtractive canon in a Roman numeral (only I X C may subtract, only the pairs IV IX XL XC CD CM are legal, no stacked subtractors, V L D never repeat) with a configurable repetition ceiling.
Description
List violations of the classical subtractive canon in a Roman numeral (only I X C may subtract, only the pairs IV IX XL XC CD CM are legal, no stacked subtractors, V L D never repeat) with a configurable repetition ceiling.
Subtractive Notation Rule Violation Detector (IIII vs IV): List violations of the classical subtractive canon in a Roman numeral (only I X C may subtract, only the pairs IV IX XL XC CD CM are legal, no stacked subtractors, V L D never repeat) with a configurable repetition ceiling.
When to use Subtractive Notation Rule Violation Detector (IIII vs IV)
Use this epigraphic utility to apply a stated parsing, transcription, measurement, dating, classification, or documentation rule consistently while preparing inscriptions for scholarly review.
- Numeral
- Roman numeral text.
- Repetition policy
- Repetition ceiling applied to I X C M runs.
How Subtractive Notation Rule Violation Detector (IIII vs IV) works
List violations of the classical subtractive canon in a Roman numeral (only I X C may subtract, only the pairs IV IX XL XC CD CM are legal, no stacked subtractors, V L D never repeat) with a configurable repetition ceiling. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.1
- Valid
- True when no rule violation was found.
- Violations
- Number of violations detected.
- Violation list
- Human-readable violation descriptions in scan order.
Limitations and assumptions
- Roman-numeral forms in inscriptions are not limited to one modern canonical subtractive system. Additive forms, overlines, reversed symbols, ligatures, damage, and local practice require transcription before numeric interpretation.
- Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.
Alternative or Complementary approaches
Retain the photograph, squeeze or scan, diplomatic transcription, provenance, dimensions, uncertainty marks, and corpus identifiers with the result. Confirm ambiguous cases against the relevant corpus, Leiden conventions, parallel inscriptions, and specialist judgment.
References
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Roman numerals — Wikipedia contributors
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