Pith Number

pith:RSJRLJI6

pith:2014:RSJRLJI6OQGHP7UCMTHVGA2YA7

not attested not anchored not stored refs pending

Beyond the Euler characteristic: Approximating the genus of general graphs

Anastasios Sidiropoulos, Ken-ichi Kawarabayashi

arxiv:1412.1792 v1 · 2014-12-04 · 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{RSJRLJI6OQGHP7UCMTHVGA2YA7}

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	2026-05-18T02:32:06.489720Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c9315a51e740c77fe8264cf53035807f68255a37a0a5fa19c4251bb11de78ff

Aliases

arxiv: 1412.1792 · arxiv_version: 1412.1792v1 · doi: 10.48550/arxiv.1412.1792 · pith_short_12: RSJRLJI6OQGH · pith_short_16: RSJRLJI6OQGHP7UC · pith_short_8: RSJRLJI6

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/RSJRLJI6OQGHP7UCMTHVGA2YA7 \
  | 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: 8c9315a51e740c77fe8264cf53035807f68255a37a0a5fa19c4251bb11de78ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "215f598cee5694d377e8810d838f258c0fb75e44bd695f52e1685fa950dd39d8",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-12-04T20:13:36Z",
    "title_canon_sha256": "0749140f61182704594cb4c0ddb91e4af3c233d8d226f8901d432ec7042d1a84"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.1792",
    "kind": "arxiv",
    "version": 1
  }
}