Pith Number

pith:RO4LHIP2

pith:2015:RO4LHIP2JR5O7XNC3VNPQCDJTI

not attested not anchored not stored refs pending

Spherical Surfaces

David Brander

arxiv:1506.01605 v3 · 2015-06-04 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RO4LHIP2JR5O7XNC3VNPQCDJTI}

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	2026-05-18T01:19:50.963785Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8bb8b3a1fa4c7aefdda2dd5af808699a0e96e3f81d2a9ad351c7c037e0e3e699

Aliases

arxiv: 1506.01605 · arxiv_version: 1506.01605v3 · doi: 10.48550/arxiv.1506.01605 · pith_short_12: RO4LHIP2JR5O · pith_short_16: RO4LHIP2JR5O7XNC · pith_short_8: RO4LHIP2

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/RO4LHIP2JR5O7XNC3VNPQCDJTI \
  | 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: 8bb8b3a1fa4c7aefdda2dd5af808699a0e96e3f81d2a9ad351c7c037e0e3e699

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68345c479ea6f605239676a777dca7d528455461f2d2aad2345b76b8462040cb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2015-06-04T14:28:45Z",
    "title_canon_sha256": "da0c2c0f4d49b9515df015f7aca98851d81e967b7c24defc04198c077409f4c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.01605",
    "kind": "arxiv",
    "version": 3
  }
}