Step-by-step derivation
S001 · implies
Before
source roles = [lagrange-multiplier-residual]
After
derived = [[objective_gradient, constraint_gradient_rows, multipliers, gradient_combination, stationarity_residual, equation_holds, sign_convention]]
Conditions: none
List the complete operation/mode field order without JavaScript or answer-shape inference;Boolean,string,null and an unclaimed result remain distinct.
Step identifiers and dependencies
Rule: source_ordered_fields_without_JS · Uses: G001
S002 · calculation
Before
Lagrange ORIGINAL ORIGINAL normalize row0 col0 := div(1, 1)
After
Lagrange ORIGINAL ORIGINAL normalize row0 col0 = 1
Conditions: none
Substitute original roles and established intermediates exactly,not approximations or internally consistent changed operands;extra teaching algebra adds no source-domain gate.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S001
S003 · calculation
Before
Lagrange ORIGINAL ORIGINAL normalize row0 col1 := div(0, 1)
After
Lagrange ORIGINAL ORIGINAL normalize row0 col1 = 0
Conditions: none
Substitute original roles and established intermediates exactly,not approximations or internally consistent changed operands;extra teaching algebra adds no source-domain gate.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S002
S004 · implies
Before
source roles = [Lagrange ORIGINAL, 0, 0, 0, [[1, 0], [0, 1]], 1]
After
derived = [[[1, 0], [0, 1]]]
Conditions: none
Use the original first-nonzero pivot order and swap rows.Divide only by a nonzero pivot and normalize EVERY column;the inverse operation multiplies back,so row rank is preserved.All unreduced source1e8 intermediates remain qualified.
Step identifiers and dependencies
Rule: Lagrange_rank_FIRST_nonzero_pivot_full_row_normalization · Uses: G001, S003
S005 · calculation
Before
Lagrange ORIGINAL ORIGINAL normalize row1 col0 := div(0, 1)
After
Lagrange ORIGINAL ORIGINAL normalize row1 col0 = 0
Conditions: none
Substitute original roles and established intermediates exactly,not approximations or internally consistent changed operands;extra teaching algebra adds no source-domain gate.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S004
S006 · calculation
Before
Lagrange ORIGINAL ORIGINAL normalize row1 col1 := div(1, 1)
After
Lagrange ORIGINAL ORIGINAL normalize row1 col1 = 1
Conditions: none
Substitute original roles and established intermediates exactly,not approximations or internally consistent changed operands;extra teaching algebra adds no source-domain gate.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S005
S007 · implies
Before
source roles = [Lagrange ORIGINAL, 1, 1, 1, [[1, 0], [0, 1]], 1]
After
derived = [[[1, 0], [0, 1]]]
Conditions: none
Use the original first-nonzero pivot order and swap rows.Divide only by a nonzero pivot and normalize EVERY column;the inverse operation multiplies back,so row rank is preserved.All unreduced source1e8 intermediates remain qualified.
Step identifiers and dependencies
Rule: Lagrange_rank_FIRST_nonzero_pivot_full_row_normalization · Uses: G001, S006
S008 · implies
Before
source roles = [Lagrange ORIGINAL, [[1, 0], [0, 1]]]
After
derived = [[[1, 0], [0, 1]], [[0, 0], [1, 1]], 2]
Conditions: none
Distinct leading1 pivots make the nonzero rows independent;remaining rows are zero and operations are invertible,so pivot count equals original row rank.Retain ORIGINAL constraint rows for J_g/lambda pairing,not RREF substitutes.
Step identifiers and dependencies
Rule: Lagrange_rank_RREF_pivots_equal_row_rank_original_rows_retained · Uses: G001, S007
S009 · calculation
Before
Lagrange ORIGINAL transpose combination coordinate0 ORIGINAL product0 := mul(1, 19)
After
Lagrange ORIGINAL transpose combination coordinate0 ORIGINAL product0 = 19
Conditions: none
Substitute original roles and established intermediates exactly,not approximations or internally consistent changed operands;extra teaching algebra adds no source-domain gate.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S008
S010 · calculation
Before
Lagrange ORIGINAL transpose combination coordinate0 ORIGINAL running sum0 := sum(0, 19)
After
Lagrange ORIGINAL transpose combination coordinate0 ORIGINAL running sum0 = 19
Conditions: none
Substitute original roles and established intermediates exactly,not approximations or internally consistent changed operands;extra teaching algebra adds no source-domain gate.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S009
S011 · calculation
Before
Lagrange ORIGINAL transpose combination coordinate0 ORIGINAL product1 := mul(0, 38)
After
Lagrange ORIGINAL transpose combination coordinate0 ORIGINAL product1 = 0
Conditions: none
Substitute original roles and established intermediates exactly,not approximations or internally consistent changed operands;extra teaching algebra adds no source-domain gate.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S010
S012 · calculation
Before
Lagrange ORIGINAL transpose combination coordinate0 ORIGINAL running sum1 := sum(19, 0)
After
Lagrange ORIGINAL transpose combination coordinate0 ORIGINAL running sum1 = 19
Conditions: none
Substitute original roles and established intermediates exactly,not approximations or internally consistent changed operands;extra teaching algebra adds no source-domain gate.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S011
S013 · calculation
Before
Lagrange ORIGINAL transpose combination coordinate1 ORIGINAL product0 := mul(0, 19)
After
Lagrange ORIGINAL transpose combination coordinate1 ORIGINAL product0 = 0
Conditions: none
Substitute original roles and established intermediates exactly,not approximations or internally consistent changed operands;extra teaching algebra adds no source-domain gate.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S012
S014 · calculation
Before
Lagrange ORIGINAL transpose combination coordinate1 ORIGINAL running sum0 := sum(0, 0)
After
Lagrange ORIGINAL transpose combination coordinate1 ORIGINAL running sum0 = 0
Conditions: none
Substitute original roles and established intermediates exactly,not approximations or internally consistent changed operands;extra teaching algebra adds no source-domain gate.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S013
S015 · calculation
Before
Lagrange ORIGINAL transpose combination coordinate1 ORIGINAL product1 := mul(1, 38)
After
Lagrange ORIGINAL transpose combination coordinate1 ORIGINAL product1 = 38
Conditions: none
Substitute original roles and established intermediates exactly,not approximations or internally consistent changed operands;extra teaching algebra adds no source-domain gate.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S014
S016 · calculation
Before
Lagrange ORIGINAL transpose combination coordinate1 ORIGINAL running sum1 := sum(0, 38)
After
Lagrange ORIGINAL transpose combination coordinate1 ORIGINAL running sum1 = 38
Conditions: none
Substitute original roles and established intermediates exactly,not approximations or internally consistent changed operands;extra teaching algebra adds no source-domain gate.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S015
S017 · calculation
Before
Lagrange ORIGINAL residual coordinate0 := sub(19, 19)
After
Lagrange ORIGINAL residual coordinate0 = 0
Conditions: none
Substitute original roles and established intermediates exactly,not approximations or internally consistent changed operands;extra teaching algebra adds no source-domain gate.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S016
S018 · calculation
Before
Lagrange ORIGINAL residual coordinate1 := sub(38, 38)
After
Lagrange ORIGINAL residual coordinate1 = 0
Conditions: none
Substitute original roles and established intermediates exactly,not approximations or internally consistent changed operands;extra teaching algebra adds no source-domain gate.
Step identifiers and dependencies
Rule: exact_rational_arithmetic · Uses: G001, S017
S019 · implies
Before
source roles = [[19, 38], [[1, 0], [0, 1]], [19, 38]]
After
derived = [[19, 38], [0, 0], Yes]
Conditions: none
Pair ORIGINAL rows with their aligned lambdas to compute J_g^T lambda.The convention is grad f equals that combination;do not silently change signs.Every residual must vanish for this algebraic stationarity check.Given vectors do not establish missing feasibility,differentiability or a minimum.
Step identifiers and dependencies
Rule: Lagrange_ORIGINAL_row_lambda_alignment_POS_sign_complete_residual · Uses: G001, S018