Pith Number

pith:TUQHGZSW

pith:2011:TUQHGZSW2T57YMPPMJN6SJJZQW

not attested not anchored not stored refs pending

Dynamic Programming for Graphs on Surfaces

Dimitrios M. Thilikos, Ignasi Sau, Juanjo Ru\'e

arxiv:1104.2486 v4 · 2011-04-13 · cs.DS · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TUQHGZSW2T57YMPPMJN6SJJZQW}

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	2026-05-18T02:22:09.389768Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d20736656d4fbfc31ef625be9253985a9ed031060fafa404c55c9202d8f4d5c

Aliases

arxiv: 1104.2486 · arxiv_version: 1104.2486v4 · doi: 10.48550/arxiv.1104.2486 · pith_short_12: TUQHGZSW2T57 · pith_short_16: TUQHGZSW2T57YMPP · pith_short_8: TUQHGZSW

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/TUQHGZSW2T57YMPPMJN6SJJZQW \
  | 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: 9d20736656d4fbfc31ef625be9253985a9ed031060fafa404c55c9202d8f4d5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "549aecd6d496472e5c3f94e57a188a8da5c1e9838f9c76002db0e3106da7f712",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-04-13T13:32:08Z",
    "title_canon_sha256": "555363632e8d6fa795e24f212132d5f4823cfc5c87cf020d93d2b370ad1dfd57"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.2486",
    "kind": "arxiv",
    "version": 4
  }
}