Pith Number

pith:MDHXMPOD

pith:2011:MDHXMPODYTSAVUYFCNND3SJJPW

not attested not anchored not stored refs pending

Approximating Graphic TSP by Matchings

Ola Svensson, Tobias M\"omke

arxiv:1104.3090 v1 · 2011-04-15 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MDHXMPODYTSAVUYFCNND3SJJPW}

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	2026-05-18T02:22:02.886966Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60cf763dc3c4e40ad305135a3dc9297d89dae6c4427bebaec4d60b97dac4e642

Aliases

arxiv: 1104.3090 · arxiv_version: 1104.3090v1 · doi: 10.48550/arxiv.1104.3090 · pith_short_12: MDHXMPODYTSA · pith_short_16: MDHXMPODYTSAVUYF · pith_short_8: MDHXMPOD

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/MDHXMPODYTSAVUYFCNND3SJJPW \
  | 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: 60cf763dc3c4e40ad305135a3dc9297d89dae6c4427bebaec4d60b97dac4e642

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "714e9a9ae80f19d4fc7ff6348386e696e7af032ad54d0ed0781d3866f0228ed0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-04-15T15:40:56Z",
    "title_canon_sha256": "62a5b2970b7265c52ad195f27d25c035a8818783649cc32eb96462e98761b0e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.3090",
    "kind": "arxiv",
    "version": 1
  }
}