Pith Number

pith:3DS2CAHH

pith:2009:3DS2CAHHZIVR34DQGWRPZPNMRK

not attested not anchored not stored refs pending

On computing the Hermite form of a matrix of differential polynomials

Mark Giesbrecht, Myung Sub Kim

arxiv:0906.4121 v1 · 2009-06-22 · cs.SC · cs.MS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3DS2CAHHZIVR34DQGWRPZPNMRK}

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	2026-05-18T02:13:13.331166Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d8e5a100e7ca2b1df07035a2fcbdac8a9f5a0fe624d0fddbb1bfe4d9a321a3e1

Aliases

arxiv: 0906.4121 · arxiv_version: 0906.4121v1 · doi: 10.48550/arxiv.0906.4121 · pith_short_12: 3DS2CAHHZIVR · pith_short_16: 3DS2CAHHZIVR34DQ · pith_short_8: 3DS2CAHH

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/3DS2CAHHZIVR34DQGWRPZPNMRK \
  | 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: d8e5a100e7ca2b1df07035a2fcbdac8a9f5a0fe624d0fddbb1bfe4d9a321a3e1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b74990c06216c7ae335336ef20ec997391b73f75a48ba1040bdc2f850f86e63",
    "cross_cats_sorted": [
      "cs.MS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SC",
    "submitted_at": "2009-06-22T20:29:09Z",
    "title_canon_sha256": "6c49cd8cc331d4e7906c39a7d60368265c52b1ec42b08d149a06329b20eb12dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.4121",
    "kind": "arxiv",
    "version": 1
  }
}