Pith Number

pith:U5DKA6UI

pith:2014:U5DKA6UICMXHSKIMZEY4MVX2MB

not attested not anchored not stored refs pending

An Etude on One Sharygin's Problem

Boyan Zlatanov

arxiv:1405.3595 v1 · 2014-05-13 · math.HO · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U5DKA6UICMXHSKIMZEY4MVX2MB}

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	2026-05-18T02:19:08.488754Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a746a07a88132e79290cc931c656fa605c64cd1f6822f522348e37b1c8062470

Aliases

arxiv: 1405.3595 · arxiv_version: 1405.3595v1 · doi: 10.48550/arxiv.1405.3595 · pith_short_12: U5DKA6UICMXH · pith_short_16: U5DKA6UICMXHSKIM · pith_short_8: U5DKA6UI

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/U5DKA6UICMXHSKIMZEY4MVX2MB \
  | 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: a746a07a88132e79290cc931c656fa605c64cd1f6822f522348e37b1c8062470

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27668a1627c8d1070ea477c5a62d9d5622667881a2843ff8be8d8bc0a881b4b8",
    "cross_cats_sorted": [
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2014-05-13T19:40:55Z",
    "title_canon_sha256": "0cb0b47539ad1e282b5f0b5de1693cfe92a7fd7abbd5928269ac4d44f7641389"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.3595",
    "kind": "arxiv",
    "version": 1
  }
}