Dontopedia

Calculate Present Value Function

From Dontopedia, the open, paraconsistent wiki. (Last updated 2026-06-06.)

Calculate Present Value Function has 28 facts recorded in Dontopedia across 3 references, with 4 live disagreements.

28 facts·20 predicates·3 sources·4 in dispute

Mostly:defines parameter(3), has docstring(3), sets variable(3)

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Inbound mentions (8)

Other subjects in dontopedia point AT this entity as a value. These are inverse relationships — e.g. "X motherOf this subject" — and answer questions the forward facts can't. Grouped by predicate.

definesFunctionDefines Function(2)

assignedFromFunctionCallAssigned From Function Call(1)

callsFunctionCalls Function(1)

impliesCorrectCalculationImplies Correct Calculation(1)

invokesFunctionInvokes Function(1)

postedPythonCodePosted Python Code(1)

resultsFromResults From(1)

Other facts (28)

The long tail: predicates that appear too rarely to warrant their own section. Filter or scroll to find a specific one. Each row links to its source.

28 facts
PredicateValueRef
Defines Parameterannual_payment = 7000[1]
Defines Parameterdiscount_rate = 0.05[1]
Defines Parameteryears = 20[1]
Has DocstringCalculate the present value of receiving $7,000 annually for 20 years at a 5% discount rate.[1]
Has DocstringDocstring Calculate Present Value[2]
Has DocstringCalculate the present value of receiving $7,000 annually for 20 years at a 5% discount rate.[3]
Sets VariableDiscount Rate Variable[2]
Sets VariableYears Variable[2]
Sets VariableAnnual Payment Variable[2]
Defines VariableAnnual Payment Variable[3]
Defines VariableDiscount Rate Variable[3]
Defines VariableYears Variable[3]
Returns Float Typefloat[1]
Uses FormulaPV = PMT * (1 - (1 + r)^-n) / r[1]
Implements Calculationpv = annual_payment * (1 - (1 + discount_rate)**(-years)) / discount_rate[1]
Rounds to Decimal Places2[1]
Models Financial ConceptPresent Value Annuity[2]
Is Annuity FormulaPresent Value Annuity[2]
Handles Annuity20 Year Annuity[2]
ComputesPv Variable[2]
Necessitates Positive RateDiscount Rate Variable[2]
Rounds to2[2]
Has Namecalculate_present_value[3]
Has Return DescriptionThe present value rounded to two decimal places[3]
Has Return Typefloat[3]
Implements FormulaAnnuity Present Value Formula[3]
Calculates VariablePv Variable[3]
Returns ExpressionReturn Round Expression[3]

Timeline

Timeline axis is valid_time — when each source says the fact was true in the world, not when Dontopedia learned about it. Retracted rows are kept for provenance; coloured stripes indicate the context kind.

28 undated
—
returnsFloatTypeblah/unturf/part-9
float
—
definesParameterblah/unturf/part-9
annual_payment = 7000
—
definesParameterblah/unturf/part-9
discount_rate = 0.05
—
definesParameterblah/unturf/part-9
years = 20
—
usesFormulablah/unturf/part-9
PV = PMT * (1 - (1 + r)^-n) / r
—
hasDocstringblah/unturf/part-9
Calculate the present value of receiving $7,000 annually for 20 years at a 5% discount rate.
—
implementsCalculationblah/unturf/part-9
pv = annual_payment * (1 - (1 + discount_rate)**(-years)) / discount_rate
—
roundsToDecimalPlacesblah/unturf/part-9
2
—
setsVariableblah/unturf/part-10
ex:discount-rate-variable
—
hasDocstringblah/unturf/part-10
ex:docstring-calculate-present-value
—
modelsFinancialConceptblah/unturf/part-10
ex:present-value-annuity
—
isAnnuityFormulablah/unturf/part-10
ex:present-value-annuity
—
setsVariableblah/unturf/part-10
ex:years-variable
—
handlesAnnuityblah/unturf/part-10
ex:20-year-annuity
—
computesblah/unturf/part-10
ex:pv-variable
—
setsVariableblah/unturf/part-10
ex:annual-payment-variable
—
necessitatesPositiveRateblah/unturf/part-10
ex:discount-rate-variable
—
roundsToblah/unturf/part-10
2
—
hasNameblah/unturf/10
calculate_present_value
—
hasDocstringblah/unturf/10
Calculate the present value of receiving $7,000 annually for 20 years at a 5% discount rate.
—
hasReturnDescriptionblah/unturf/10
The present value rounded to two decimal places
—
hasReturnTypeblah/unturf/10
float
—
definesVariableblah/unturf/10
ex:annual-payment-variable
—
definesVariableblah/unturf/10
ex:discount-rate-variable
—
definesVariableblah/unturf/10
ex:years-variable
—
implementsFormulablah/unturf/10
ex:annuity-present-value-formula
—
calculatesVariableblah/unturf/10
ex:pv-variable
—
returnsExpressionblah/unturf/10
ex:return-round-expression

References (3)

3 references
  1. [1]Part 98 facts
    ctx:discord/blah/unturf/part-9
  2. [2]Part 1010 facts
    ctx:discord/blah/unturf/part-10
  3. [3]1010 facts
    ctx:discord/blah/unturf/10
    • full textunturf-10
      text/plain2 KBdoc:agent/unturf-10/f0722190-2e22-46a0-8eb4-4f1d35cbd7d8
      Show excerpt
      [2025-12-01 17:16] foxhop.: ```python def calculate_present_value(): """ Calculate the present value of receiving $7,000 annually for 20 years at a 5% discount rate. Returns: float: The present value rounded to two …

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