Pith Number

pith:B3DYULS5

pith:2019:B3DYULS5JVMQP3UFKIADZBC3Z5

not attested not anchored not stored refs pending

Transformed flips in triangulations and matchings

Birgit Vogtenhuber, Karin Baur, Lukas Andritsch, Oswin Aichholzer

arxiv:1907.08758 v1 · 2019-07-20 · 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{B3DYULS5JVMQP3UFKIADZBC3Z5}

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	2026-05-17T23:40:05.450178Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ec78a2e5d4d5907ee8552003c845bcf7f1d4e461ddf3479da83df15df61215b

Aliases

arxiv: 1907.08758 · arxiv_version: 1907.08758v1 · doi: 10.48550/arxiv.1907.08758 · pith_short_12: B3DYULS5JVMQ · pith_short_16: B3DYULS5JVMQP3UF · pith_short_8: B3DYULS5

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/B3DYULS5JVMQP3UFKIADZBC3Z5 \
  | 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: 0ec78a2e5d4d5907ee8552003c845bcf7f1d4e461ddf3479da83df15df61215b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cfb0e58b4f32f1a492883ceba48b853de716458230282ba9d15d1601a16f77b9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-07-20T05:08:08Z",
    "title_canon_sha256": "157b9466c45fdae9d159a3a80b83ff86a4f95c738072b262e5946206909c8b65"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.08758",
    "kind": "arxiv",
    "version": 1
  }
}