Pith Number

pith:BB35CY4V

pith:2019:BB35CY4VYVRCKZCIMATIKCW5NN

not attested not anchored not stored refs pending

Trignometry Without Geometry

Bryant Wyatt, Jesse Crawford, John Gresham

arxiv:1906.07050 v1 · 2019-06-12 · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BB35CY4VYVRCKZCIMATIKCW5NN}

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	2026-07-05T05:58:27.789255Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0877d16395c5622564486026850add6b632e6b1d224f0be2094841a444d674c5

Aliases

arxiv: 1906.07050 · arxiv_version: 1906.07050v1 · doi: 10.48550/arxiv.1906.07050 · pith_short_12: BB35CY4VYVRC · pith_short_16: BB35CY4VYVRCKZCI · pith_short_8: BB35CY4V

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/BB35CY4VYVRCKZCIMATIKCW5NN \
  | 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: 0877d16395c5622564486026850add6b632e6b1d224f0be2094841a444d674c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51c8d7bd57aa539fee8014e39076d2d2e88f11d856a58029d8e1bfd1cb8fd982",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2019-06-12T19:43:44Z",
    "title_canon_sha256": "fb6c9205f13f5abef9714aaddb4d720a0cf18c14fad171e1d1b9b3484bcde98b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.07050",
    "kind": "arxiv",
    "version": 1
  }
}