Question 26039: Minimum Vertex Covers Are Selected Only after Complete Subset Coverage Audits

Original question and givens

Use complete unique vertices=[v0, v1, v2, v3, v4, v5, v6, v7] and loop-free duplicate-free undirected edges=[[v0, v1], [v1, v2], [v2, v3], [v3, v4], [v4, v5], [v5, v6], [v6, v7], [v7, v0]]. An edge needs at least one selected endpoint. Preserve source canonical subset order. Give (vertices, edges, all_covers, minimum_size, minimum_covers, certificate).

• G001 — Use complete unique vertices=[v0, v1, v2, v3, v4, v5, v6, v7] and loop-free duplicate-free undirected edges=[[v0, v1], [v1, v2], [v2, v3], [v3, v4], [v4, v5], [v5, v6], [v6, v7], [v7, v0]]. An edge needs at least one selected endpoint. Preserve source canonical subset order. Give (vertices, edges, all_covers, minimum_size, minimum_covers, certificate).

Definition and scope

Use the original question domain, assumptions and cited MKO definitions. This item has second-context mathematical and bilingual review, with the model, answer and every arithmetic step independently recomputed from the original parameters; the source question remains a candidate.

• mko-minimum-vertex-cover

Step-by-step derivation

source roles = [mincover-exhaustive-minimizers]

derived = [[vertices, edges, all_covers, minimum_size, minimum_covers, certificate]]

source roles = [[v0, v1, v2, v3, v4, v5, v6, v7], [[v0, v1], [v1, v2], [v2, v3], [v3, v4], [v4, v5], [v5, v6], [v6, v7], [v7, v0]], null]

derived = [[v0, v1, v2, v3, v4, v5, v6, v7], [[v0, v1], [v0, v7], [v1, v2], [v2, v3], [v3, v4], [v4, v5], [v5, v6], [v6, v7]], null]

source roles = [[v0, v1, v2, v3, v4, v5, v6, v7], [[v0, v1], [v0, v7], [v1, v2], [v2, v3], [v3, v4], [v4, v5], [v5, v6], [v6, v7]], 256]

derived = [[85, 87, 91, 93, 95, 107, 109, 111, 117, 119, 123, 125, 127, 170, 171, 173, 174, 175, 181, 182, 183, 186, 187, 189, 190, 191, 213, 214, 215, 218, 219, 221, 222, 223, 234, 235, 237, 238, 239, 245, 246, 247, 250, 251, 253, 254, 255], [[0, 0], [1, 2], [2, 1], [3, 3], [4, 0], [5, 4], [6, 1], [7, 4], [8, 0], [9, 2], [10, 1], [11, 5], [12, 0], [13, 5], [14, 1], [15, 5], [16, 0], [17, 2], [18, 1], [19, 3], [20, 0], [21, 6], [22, 1], [23, 6], [24, 0], [25, 2], [26, 1], [27, 6], [28, 0], [29, 6], [30, 1], [31, 6], [32, 0], [33, 2], [34, 1], [35, 3], [36, 0], [37, 4], [38, 1], [39, 4], [40, 0], [41, 2], [42, 1], [43, 7], [44, 0], [45, 7], [46, 1], [47, 7], [48, 0], [49, 2], [50, 1], [51, 3], [52, 0], [53, 7], [54, 1], [55, 7], [56, 0], [57, 2], [58, 1], [59, 7], [60, 0], [61, 7], [62, 1], [63, 7], [64, 0], [65, 2], [66, 1], [67, 3], [68, 0], [69, 4], [70, 1], [71, 4], [72, 0], [73, 2], [74, 1], [75, 5], [76, 0], [77, 5], [78, 1], [79, 5], [80, 0], [81, 2], [82, 1], [83, 3], [84, 0], [86, 1], [88, 0], [89, 2], [90, 1], [92, 0], [94, 1], [96, 0], [97, 2], [98, 1], [99, 3], [100, 0], [101, 4], [102, 1], [103, 4], [104, 0], [105, 2], [106, 1], [108, 0], [110, 1], [112, 0], [113, 2], [114, 1], [115, 3], [116, 0], [118, 1], [120, 0], [121, 2], [122, 1], [124, 0], [126, 1], [128, 0], [129, 2], [130, 3], [131, 3], [132, 0], [133, 4], [134, 4], [135, 4], [136, 0], [137, 2], [138, 5], [139, 5], [140, 0], [141, 5], [142, 5], [143, 5], [144, 0], [145, 2], [146, 3], [147, 3], [148, 0], [149, 6], [150, 6], [151, 6], [152, 0], [153, 2], [154, 6], [155, 6], [156, 0], [157, 6], [158, 6], [159, 6], [160, 0], [161, 2], [162, 3], [163, 3], [164, 0], [165, 4], [166, 4], [167, 4], [168, 0], [169, 2], [172, 0], [176, 0], [177, 2], [178, 3], [179, 3], [180, 0], [184, 0], [185, 2], [188, 0], [192, 0], [193, 2], [194, 3], [195, 3], [196, 0], [197, 4], [198, 4], [199, 4], [200, 0], [201, 2], [202, 5], [203, 5], [204, 0], [205, 5], [206, 5], [207, 5], [208, 0], [209, 2], [210, 3], [211, 3], [212, 0], [216, 0], [217, 2], [220, 0], [224, 0], [225, 2], [226, 3], [227, 3], [228, 0], [229, 4], [230, 4], [231, 4], [232, 0], [233, 2], [236, 0], [240, 0], [241, 2], [242, 3], [243, 3], [244, 0], [248, 0], [249, 2], [252, 0]], [[v0, v2, v4, v6], [v0, v1, v2, v4, v6], [v0, v1, v3, v4, v6], [v0, v2, v3, v4, v6], [v0, v1, v2, v3, v4, v6], [v0, v1, v3, v5, v6], [v0, v2, v3, v5, v6], [v0, v1, v2, v3, v5, v6], [v0, v2, v4, v5, v6], [v0, v1, v2, v4, v5, v6], [v0, v1, v3, v4, v5, v6], [v0, v2, v3, v4, v5, v6], [v0, v1, v2, v3, v4, v5, v6], [v1, v3, v5, v7], [v0, v1, v3, v5, v7], [v0, v2, v3, v5, v7], [v1, v2, v3, v5, v7], [v0, v1, v2, v3, v5, v7], [v0, v2, v4, v5, v7], [v1, v2, v4, v5, v7], [v0, v1, v2, v4, v5, v7], [v1, v3, v4, v5, v7], [v0, v1, v3, v4, v5, v7], [v0, v2, v3, v4, v5, v7], [v1, v2, v3, v4, v5, v7], [v0, v1, v2, v3, v4, v5, v7], [v0, v2, v4, v6, v7], [v1, v2, v4, v6, v7], [v0, v1, v2, v4, v6, v7], [v1, v3, v4, v6, v7], [v0, v1, v3, v4, v6, v7], [v0, v2, v3, v4, v6, v7], [v1, v2, v3, v4, v6, v7], [v0, v1, v2, v3, v4, v6, v7], [v1, v3, v5, v6, v7], [v0, v1, v3, v5, v6, v7], [v0, v2, v3, v5, v6, v7], [v1, v2, v3, v5, v6, v7], [v0, v1, v2, v3, v5, v6, v7], [v0, v2, v4, v5, v6, v7], [v1, v2, v4, v5, v6, v7], [v0, v1, v2, v4, v5, v6, v7], [v1, v3, v4, v5, v6, v7], [v0, v1, v3, v4, v5, v6, v7], [v0, v2, v3, v4, v5, v6, v7], [v1, v2, v3, v4, v5, v6, v7], [v0, v1, v2, v3, v4, v5, v6, v7]], [0, 0, 0, 0, 2, 16, 20, 8, 1], 4, [[v0, v2, v4, v6], [v1, v3, v5, v7]]]

Reverse checks

• S003 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
• S002 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
• S001 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.

Result

([v0, v1, v2, v3, v4, v5, v6, v7], [[v0, v1], [v0, v7], [v1, v2], [v2, v3], [v3, v4], [v4, v5], [v5, v6], [v6, v7]], [[v0, v2, v4, v6], [v0, v1, v2, v4, v6], [v0, v1, v3, v4, v6], [v0, v2, v3, v4, v6], [v0, v1, v2, v3, v4, v6], [v0, v1, v3, v5, v6], [v0, v2, v3, v5, v6], [v0, v1, v2, v3, v5, v6], [v0, v2, v4, v5, v6], [v0, v1, v2, v4, v5, v6], [v0, v1, v3, v4, v5, v6], [v0, v2, v3, v4, v5, v6], [v0, v1, v2, v3, v4, v5, v6], [v1, v3, v5, v7], [v0, v1, v3, v5, v7], [v0, v2, v3, v5, v7], [v1, v2, v3, v5, v7], [v0, v1, v2, v3, v5, v7], [v0, v2, v4, v5, v7], [v1, v2, v4, v5, v7], [v0, v1, v2, v4, v5, v7], [v1, v3, v4, v5, v7], [v0, v1, v3, v4, v5, v7], [v0, v2, v3, v4, v5, v7], [v1, v2, v3, v4, v5, v7], [v0, v1, v2, v3, v4, v5, v7], [v0, v2, v4, v6, v7], [v1, v2, v4, v6, v7], [v0, v1, v2, v4, v6, v7], [v1, v3, v4, v6, v7], [v0, v1, v3, v4, v6, v7], [v0, v2, v3, v4, v6, v7], [v1, v2, v3, v4, v6, v7], [v0, v1, v2, v3, v4, v6, v7], [v1, v3, v5, v6, v7], [v0, v1, v3, v5, v6, v7], [v0, v2, v3, v5, v6, v7], [v1, v2, v3, v5, v6, v7], [v0, v1, v2, v3, v5, v6, v7], [v0, v2, v4, v5, v6, v7], [v1, v2, v4, v5, v6, v7], [v0, v1, v2, v4, v5, v6, v7], [v1, v3, v4, v5, v6, v7], [v0, v1, v3, v4, v5, v6, v7], [v0, v2, v3, v4, v5, v6, v7], [v1, v2, v3, v4, v5, v6, v7], [v0, v1, v2, v3, v4, v5, v6, v7]], 4, [[v0, v2, v4, v6], [v1, v3, v5, v7]], all_vertex_subsets_are_audited_before_selecting_all_minimizers)

The full substitutions and premise checks give the original answer; source identity,format and status are unchanged.

This question review and source binding

Review date: 2026-10-26

Original questions, answers, step expressions, numeric ASTs and historical records are retained. Source candidate labels remain historical and are not overwritten as formal proof.