Pith Number

pith:TDNCMKNE

pith:2017:TDNCMKNE3Q7VTMNMZ4EHORXLSD

not attested not anchored not stored refs pending

Computing the maximum matching width is NP-hard

Jisu Jeong, Kwangjun Ahn

arxiv:1710.05117 v1 · 2017-10-14 · cs.DM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TDNCMKNE3Q7VTMNMZ4EHORXLSD}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:32:54.320828Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

98da2629a4dc3f59b1accf087746eb90c84d7aadcb9939733d80f1590e809c87

Aliases

arxiv: 1710.05117 · arxiv_version: 1710.05117v1 · doi: 10.48550/arxiv.1710.05117 · pith_short_12: TDNCMKNE3Q7V · pith_short_16: TDNCMKNE3Q7VTMNM · pith_short_8: TDNCMKNE

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/TDNCMKNE3Q7VTMNMZ4EHORXLSD \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 98da2629a4dc3f59b1accf087746eb90c84d7aadcb9939733d80f1590e809c87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ca9e49708d071dc806f39cbbaa9b8beb0118405d53ab687cdebe031b45744a4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2017-10-14T01:12:32Z",
    "title_canon_sha256": "6ddda119461198949f61c785bfa41f98ed1676a12b69353c704f9e11fde851fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.05117",
    "kind": "arxiv",
    "version": 1
  }
}