Update ACCEPTED_PROPOSALS.md

Author: TotalTechGeek

ACCEPTED_PROPOSALS.md

@@ -7,3 +7,4 @@ Define JSON Logic on the JSON Data Model | - Defines JSON Logic on the data mode
 `val` and context replacements | - Deprecates `var`, `missing` and `missing_some` to the legacy extension <br/> <br/> - Defines `val`, `exists` and `??` | https://github.com/orgs/json-logic/discussions/18 | [`val.json`](tests/val.json), [`exists.json`](tests/exists.json), [`coalesce.json`](tests/coalesce.json) | 1
  Amend Test Specification / Error Handling | - Defines that errors like `NaN` should bubble up the AST and halt execution, unless handled. <br/><br/> - Extends the test specification to be able to test for errors. <br/><br/> - Introduces two new operators, `throw` and `try` <br/><br/> - Defines that division by zero results in a `NaN` error. | https://github.com/orgs/json-logic/discussions/20 | [`throw.json`](tests/throw.json), [`try.json`](tests/try.json) | 1
  Linear Time Ruling | - Establishes a guideline for selecting enabled by default JSON Logic operators. <br/><br/> - All JSON Logic Core operators must be definable to run in a worst case  Linear Time; ≤ Θ(n).<br/><br/> - Community Extensions may be recognized with operators that exceed this, but they must not be recommended for enablement by default. <br /><br/> - This is not an implementation mandate, rather a guideline for TC and Organization members to select JSON Logic operators in a way that mitigates denial of service attacks when rules are executed from an untrusted source. | https://github.com/orgs/json-logic/discussions/24 | N/A | 3
+ Arithmetic Operators | - The first proposal of several to evaluate existing operators and define any ambiguous behavior / improve consistency of the operators. <br/><br/> - Defined various `NaN` error states (invalid string coercions, divisions by zero) <br/><br/> - Defined Zero Argument and Single Argument and Variadic behavior for each operator (`+`, `-`, `*`, `/`, `%`) <br/><br/> - The variadic operators are treated as `foldLeft` <br/> <br/> - Defined numeric coercion rules. | https://github.com/orgs/json-logic/discussions/21 | [plus.json](tests/plus.json), [minus.json](tests/minus.json), [multiply.json](tests/multiply.json), [divide.json](tests/divide.json), [modulo.json](tests/modulo.json) | 1