Pith Number

pith:CMPBZUT3

pith:2018:CMPBZUT3S2L2BQQXW6TIGT5AB6

not attested not anchored not stored refs pending

Bohemian Upper Hessenberg Matrices

Eunice Y. S. Chan, J. Rafael Sendra, Juana Sendra, Laureano Gonzalez-Vega, Robert M. Corless, Steven E. Thornton

arxiv:1809.10653 v1 · 2018-09-27 · cs.SC · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CMPBZUT3S2L2BQQXW6TIGT5AB6}

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	2026-05-18T00:04:37.920644Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

131e1cd27b9697a0c217b7a6834fa00fb46939251a22bd02961df48d045caa61

Aliases

arxiv: 1809.10653 · arxiv_version: 1809.10653v1 · doi: 10.48550/arxiv.1809.10653 · pith_short_12: CMPBZUT3S2L2 · pith_short_16: CMPBZUT3S2L2BQQX · pith_short_8: CMPBZUT3

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/CMPBZUT3S2L2BQQXW6TIGT5AB6 \
  | 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: 131e1cd27b9697a0c217b7a6834fa00fb46939251a22bd02961df48d045caa61

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8833eca1bd6a96cb211fa0112a7dc757716001ccbca86fbcfdffc1beafeb6267",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SC",
    "submitted_at": "2018-09-27T17:28:56Z",
    "title_canon_sha256": "78c8b13c417f587527542aa1b0aa074ebcc0ca129ac6eb06ae2c6793ed519b06"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.10653",
    "kind": "arxiv",
    "version": 1
  }
}