Pith Number

pith:7TDZYW2G

pith:2012:7TDZYW2GKTK46RR2AXCCFNJCDT

not attested not anchored not stored refs pending

Toroidal maps : Schnyder woods, orthogonal surfaces and straight-line representations

Benjamin L\'ev\^eque, Daniel Gon\c{c}alves

arxiv:1202.0911 v2 · 2012-02-04 · cs.DM · 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{7TDZYW2GKTK46RR2AXCCFNJCDT}

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	2026-05-18T03:51:36.563297Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fcc79c5b4654d5cf463a05c422b5221cc85285ec964a10e2bd7fac3fa55c2e7d

Aliases

arxiv: 1202.0911 · arxiv_version: 1202.0911v2 · doi: 10.48550/arxiv.1202.0911 · pith_short_12: 7TDZYW2GKTK4 · pith_short_16: 7TDZYW2GKTK46RR2 · pith_short_8: 7TDZYW2G

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/7TDZYW2GKTK46RR2AXCCFNJCDT \
  | 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: fcc79c5b4654d5cf463a05c422b5221cc85285ec964a10e2bd7fac3fa55c2e7d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a039687f8ee9585c0e51208b1e8a961b07199d14fe0a8e26051b09538a24c260",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2012-02-04T18:01:05Z",
    "title_canon_sha256": "384669804231dc15211c482f4b9ff20962617927bfd43804c3731805bc4d7d07"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.0911",
    "kind": "arxiv",
    "version": 2
  }
}