Pith Number

pith:N3NQUDYC

pith:2016:N3NQUDYCCMQFASLFUTUPW6OYSC

not attested not anchored not stored refs pending

The Double n-Space Property for Contractible n-Manifolds

Pete Sparks

arxiv:1610.10019 v1 · 2016-10-31 · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N3NQUDYCCMQFASLFUTUPW6OYSC}

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	2026-05-18T00:17:09.562691Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6edb0a0f021320504965a4e8fb79d890a678ebbadd2a37ab7f71a94a218b9d97

Aliases

arxiv: 1610.10019 · arxiv_version: 1610.10019v1 · doi: 10.48550/arxiv.1610.10019 · pith_short_12: N3NQUDYCCMQF · pith_short_16: N3NQUDYCCMQFASLF · pith_short_8: N3NQUDYC

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/N3NQUDYCCMQFASLFUTUPW6OYSC \
  | 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: 6edb0a0f021320504965a4e8fb79d890a678ebbadd2a37ab7f71a94a218b9d97

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51b84c00ca71873aca040425d7fbc73ebc6495bb60b86a96e5f81c36165ca331",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2016-10-31T17:11:05Z",
    "title_canon_sha256": "3860d759d17281591ea85d4f622cc58b70cedfc93208c96c4cd105eba3484bf3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.10019",
    "kind": "arxiv",
    "version": 1
  }
}