Pith Number

pith:E53MZKWE

pith:2012:E53MZKWEZTHIXACZXLRH7KHN43

not attested not anchored not stored refs pending

Condition Estimation by Means of the Power Method

Victor Y. Pan

arxiv:1212.4549 v4 · 2012-12-19 · math.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{E53MZKWEZTHIXACZXLRH7KHN43}

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	2026-05-18T00:24:32.237941Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2776ccaac4ccce8b8059bae27fa8ede6f598daeff7e1d3cab330c51f4ab7e5b4

Aliases

arxiv: 1212.4549 · arxiv_version: 1212.4549v4 · doi: 10.48550/arxiv.1212.4549 · pith_short_12: E53MZKWEZTHI · pith_short_16: E53MZKWEZTHIXACZ · pith_short_8: E53MZKWE

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/E53MZKWEZTHIXACZXLRH7KHN43 \
  | 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: 2776ccaac4ccce8b8059bae27fa8ede6f598daeff7e1d3cab330c51f4ab7e5b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d1eac8e734d3e7c00a5dccab8634cadd345a021ca4c040ea5e9dfe81990328b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-12-19T01:17:40Z",
    "title_canon_sha256": "c2204bb441fa455b66fc9313e4a2273c1a04aee31ec3da8b3fad829b58b66386"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.4549",
    "kind": "arxiv",
    "version": 4
  }
}