Pith Number

pith:ECEGSM4R

pith:2011:ECEGSM4RD47DQEA7WBZRZYBATO

not attested not anchored not stored refs pending

An algebraic distances measure of AMG strength of connection

Achi Brandt, Ira Livshits, James Brannick, Karsten Kahl

arxiv:1106.5990 v1 · 2011-06-29 · 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{ECEGSM4RD47DQEA7WBZRZYBATO}

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	2026-05-18T04:19:04.714958Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20886933911f3e38101fb0731ce0209b8b8422708fd4ce437594b490527cf01c

Aliases

arxiv: 1106.5990 · arxiv_version: 1106.5990v1 · doi: 10.48550/arxiv.1106.5990 · pith_short_12: ECEGSM4RD47D · pith_short_16: ECEGSM4RD47DQEA7 · pith_short_8: ECEGSM4R

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/ECEGSM4RD47DQEA7WBZRZYBATO \
  | 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: 20886933911f3e38101fb0731ce0209b8b8422708fd4ce437594b490527cf01c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85d7fa0c73aff40f1c42cec36261657852030fec9f58e48c6336dc7a46f120ac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2011-06-29T16:23:42Z",
    "title_canon_sha256": "5dd599277f01edd3ca8a5c99dd8c6c776c9e871d0c90e2311cd6da828587ff1b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.5990",
    "kind": "arxiv",
    "version": 1
  }
}