Pith Number

pith:NEIOOMDZ

pith:2009:NEIOOMDZCHLBNWCLWBUE2NNPSR

not attested not anchored not stored refs pending

On backward errors of structured polynomial eigenproblems solved by structure preserving linearizations

Bibhas Adhikari, Rafikul Alam

arxiv:0907.2545 v1 · 2009-07-15 · math.NA · 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{NEIOOMDZCHLBNWCLWBUE2NNPSR}

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	2026-06-03T23:06:27.782118Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6910e7307911d616d84bb0684d35af94465d063c95e70117dbc17523f9366654

Aliases

arxiv: 0907.2545 · arxiv_version: 0907.2545v1 · doi: 10.48550/arxiv.0907.2545 · pith_short_12: NEIOOMDZCHLB · pith_short_16: NEIOOMDZCHLBNWCL · pith_short_8: NEIOOMDZ

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/NEIOOMDZCHLBNWCLWBUE2NNPSR \
  | 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: 6910e7307911d616d84bb0684d35af94465d063c95e70117dbc17523f9366654

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aefc450344bb2da8e7320254b933a11e0cabb1ff53baf96f9b96ad6aae04e79a",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2009-07-15T10:04:51Z",
    "title_canon_sha256": "56bf7563dfb1e0cc5363b0412d62199c172ce6a936017ea3e4291b4c1ff5ced0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.2545",
    "kind": "arxiv",
    "version": 1
  }
}