Pith Number

pith:VGWPG2FE

pith:2019:VGWPG2FEMZAFFUYCI4NUJ2GFQQ

not attested not anchored not stored refs pending

Quaternionic left eigenvalue problem: a matrix representation

Kit Ian Kou, Wankai Liu

arxiv:1903.08897 v1 · 2019-03-21 · 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{VGWPG2FEMZAFFUYCI4NUJ2GFQQ}

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	2026-05-17T23:50:43.635284Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9acf368a4664052d302471b44e8c5842e9d1cf460d8483511cdf3658f5447d0

Aliases

arxiv: 1903.08897 · arxiv_version: 1903.08897v1 · doi: 10.48550/arxiv.1903.08897 · pith_short_12: VGWPG2FEMZAF · pith_short_16: VGWPG2FEMZAFFUYC · pith_short_8: VGWPG2FE

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/VGWPG2FEMZAFFUYCI4NUJ2GFQQ \
  | 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: a9acf368a4664052d302471b44e8c5842e9d1cf460d8483511cdf3658f5447d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9774c0129f63b797512ad79b2e774c2ce3d2227b100f719611f6c450e17e09cd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GM",
    "submitted_at": "2019-03-21T09:49:04Z",
    "title_canon_sha256": "906888c6675fbad700334b165315d876792e0335ed6d7da0768e441bfa7f0b39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.08897",
    "kind": "arxiv",
    "version": 1
  }
}