Pith Number

pith:SYOCRPEG

pith:2019:SYOCRPEG2NXUYEOXXCYACUXEMN

not attested not anchored not stored refs pending

Envelopes in Outer Space

Christian Steinhart

arxiv:1907.06402 v1 · 2019-07-15 · math.GT · math.GR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SYOCRPEG2NXUYEOXXCYACUXEMN}

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	2026-05-17T23:40:37.728339Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

961c28bc86d36f4c11d7b8b00152e46375859d009fe619904cf78a641112c148

Aliases

arxiv: 1907.06402 · arxiv_version: 1907.06402v1 · doi: 10.48550/arxiv.1907.06402 · pith_short_12: SYOCRPEG2NXU · pith_short_16: SYOCRPEG2NXUYEOX · pith_short_8: SYOCRPEG

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/SYOCRPEG2NXUYEOXXCYACUXEMN \
  | 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: 961c28bc86d36f4c11d7b8b00152e46375859d009fe619904cf78a641112c148

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3a25f02bbd5551004462a0dfb51de326b868e83714241b1e8de143f65bf7fa0",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2019-07-15T09:53:32Z",
    "title_canon_sha256": "a7552530cb692ef15187a2c6b0f1862718eaf30128375c53628f579d892cc848"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.06402",
    "kind": "arxiv",
    "version": 1
  }
}