Pith Number

pith:2E7KLP7Z

pith:2019:2E7KLP7ZKUGU7DDLBCFBMF43XS

not attested not anchored not stored refs pending

Eigenvector of a matrix in $SO_3(\mathbb{R})$

Amol Sasane, Victor Ufnarovski

arxiv:1905.07404 v1 · 2019-05-17 · math.GM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2E7KLP7ZKUGU7DDLBCFBMF43XS}

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	2026-05-17T23:45:51.392125Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d13ea5bff9550d4f8c6b088a16179bbcad1a0a40bfdc8e0c99818bf16a3d2432

Aliases

arxiv: 1905.07404 · arxiv_version: 1905.07404v1 · doi: 10.48550/arxiv.1905.07404 · pith_short_12: 2E7KLP7ZKUGU · pith_short_16: 2E7KLP7ZKUGU7DDL · pith_short_8: 2E7KLP7Z

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/2E7KLP7ZKUGU7DDLBCFBMF43XS \
  | 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: d13ea5bff9550d4f8c6b088a16179bbcad1a0a40bfdc8e0c99818bf16a3d2432

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dbadd5351e64075c7b7e2ea9ea8b6290fd5d8890bb36d5a8e3bfd554c16771c9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GM",
    "submitted_at": "2019-05-17T12:41:01Z",
    "title_canon_sha256": "6b516745a73dd1142294687838c4116c37dee515839588bc389e6f292e3336ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.07404",
    "kind": "arxiv",
    "version": 1
  }
}