Pith Number

pith:23ETQA5H

pith:2013:23ETQA5HC4CON4Y2ZL5EZEH2I5

not attested not anchored not stored refs pending

An O(N) algorithm for constructing the solution operator to 2D elliptic boundary value problems in the absence of body loads

Adrianna Gillman, Per-Gunnar Martinsson

arxiv:1302.5995 v1 · 2013-02-25 · 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{23ETQA5HC4CON4Y2ZL5EZEH2I5}

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	2026-05-18T03:32:32.912528Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6c93803a71704e6f31acafa4c90fa4749dc2756a1f85f77a680aab88d55404c

Aliases

arxiv: 1302.5995 · arxiv_version: 1302.5995v1 · doi: 10.48550/arxiv.1302.5995 · pith_short_12: 23ETQA5HC4CO · pith_short_16: 23ETQA5HC4CON4Y2 · pith_short_8: 23ETQA5H

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/23ETQA5HC4CON4Y2ZL5EZEH2I5 \
  | 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: d6c93803a71704e6f31acafa4c90fa4749dc2756a1f85f77a680aab88d55404c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ad689c132dafa20e95243216bf23dcbfb18c0fb5d95dcfc206676c8d6bad04f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-02-25T05:12:08Z",
    "title_canon_sha256": "ab211998e15734fe3956459d502158e8533bb0a4a9e47431b17036e89bf4d0ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.5995",
    "kind": "arxiv",
    "version": 1
  }
}