Pith Number

pith:YV2MCS3F

pith:2011:YV2MCS3FKI3Y2PRLW74CRQHK27

not attested not anchored not stored refs pending

Surface Split Decompositions and Subgraph Isomorphism in Graphs on Surfaces

Paul Bonsma

arxiv:1109.4554 v1 · 2011-09-21 · 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{YV2MCS3FKI3Y2PRLW74CRQHK27}

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	2026-05-18T02:21:36.387649Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c574c14b6552378d3e2bb7f828c0ead7f76a32ecf4cf10811d00c8783fe23d25

Aliases

arxiv: 1109.4554 · arxiv_version: 1109.4554v1 · doi: 10.48550/arxiv.1109.4554 · pith_short_12: YV2MCS3FKI3Y · pith_short_16: YV2MCS3FKI3Y2PRL · pith_short_8: YV2MCS3F

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/YV2MCS3FKI3Y2PRLW74CRQHK27 \
  | 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: c574c14b6552378d3e2bb7f828c0ead7f76a32ecf4cf10811d00c8783fe23d25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df6e3282c6b34d25181a44944a5f0ec0b85ce7d85be7f5bd950eee1d561e07ae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2011-09-21T15:22:19Z",
    "title_canon_sha256": "68f94ea95c707f7fa60076ccb24223d19cc5275fb3a4b6af1ab6b4d9537ffd9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.4554",
    "kind": "arxiv",
    "version": 1
  }
}