Pith Number

pith:NHY7DRBV

pith:2019:NHY7DRBV3O3I6W33AWSDTYG45E

not attested not anchored not stored refs pending

Factorization of symplectic matrices into elementary factors

Bj\"orn Ivarsson, Erik L{\o}w, Frank Kutzschebauch

arxiv:1905.02694 v2 · 2019-05-07 · math.SG · math.CV · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NHY7DRBV3O3I6W33AWSDTYG45E}

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	2026-05-17T23:45:22.213740Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69f1f1c435dbb68f5b7b05a439e0dce93ebcc28f6b801c23cf2d90f2e46806ea

Aliases

arxiv: 1905.02694 · arxiv_version: 1905.02694v2 · doi: 10.48550/arxiv.1905.02694 · pith_short_12: NHY7DRBV3O3I · pith_short_16: NHY7DRBV3O3I6W33 · pith_short_8: NHY7DRBV

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/NHY7DRBV3O3I6W33AWSDTYG45E \
  | 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: 69f1f1c435dbb68f5b7b05a439e0dce93ebcc28f6b801c23cf2d90f2e46806ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93354a9164a4d27d623eee2d36ef3492bdc15e5258156a7ee22a9a7365c4d2a6",
    "cross_cats_sorted": [
      "math.CV",
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2019-05-07T16:59:39Z",
    "title_canon_sha256": "2e7fef79f1743ccd20f5c594377c2dc82f7f78462f55a84d7e23194dcc3d6e2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.02694",
    "kind": "arxiv",
    "version": 2
  }
}