Pith Number

pith:IFWMGPDQ

pith:2014:IFWMGPDQIT37AJJIBXJQIP3AKA

not attested not anchored not stored refs pending

Linear-Time Compression of Bounded-Genus Graphs into Information-Theoretically Optimal Number of Bits

Hsueh-I Lu

arxiv:1401.2538 v1 · 2014-01-11 · 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{IFWMGPDQIT37AJJIBXJQIP3AKA}

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	2026-05-18T02:53:29.748278Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

416cc33c7044f7f025280dd3043f60501b0b20a9b78dd7008da1b9f5fdaf5d1f

Aliases

arxiv: 1401.2538 · arxiv_version: 1401.2538v1 · doi: 10.48550/arxiv.1401.2538 · pith_short_12: IFWMGPDQIT37 · pith_short_16: IFWMGPDQIT37AJJI · pith_short_8: IFWMGPDQ

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/IFWMGPDQIT37AJJIBXJQIP3AKA \
  | 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: 416cc33c7044f7f025280dd3043f60501b0b20a9b78dd7008da1b9f5fdaf5d1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fcf7481afc06e9bbc95bc2964d1447a845cfb2aa04ce156c443967bcc43d5500",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-01-11T15:01:49Z",
    "title_canon_sha256": "da150a7d5e7a9fc9d8329e04b3d9640647afc0c2549776be9c4e255ca470fe3a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.2538",
    "kind": "arxiv",
    "version": 1
  }
}