Pith Number

pith:UABAGBM2

pith:2011:UABAGBM2WC2OZ52V7MXQVTZEZB

not attested not anchored not stored refs pending

An analysis of the practical DPG method

Jay Gopalakrishnan, Weifeng Qiu

arxiv:1107.4293 v2 · 2011-07-21 · 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{UABAGBM2WC2OZ52V7MXQVTZEZB}

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	2026-05-18T03:54:47.930905Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a00203059ab0b4ecf755fb2f0acf24c849f49d1141c2fee0eb9090eb7986edb5

Aliases

arxiv: 1107.4293 · arxiv_version: 1107.4293v2 · doi: 10.48550/arxiv.1107.4293 · pith_short_12: UABAGBM2WC2O · pith_short_16: UABAGBM2WC2OZ52V · pith_short_8: UABAGBM2

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/UABAGBM2WC2OZ52V7MXQVTZEZB \
  | 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: a00203059ab0b4ecf755fb2f0acf24c849f49d1141c2fee0eb9090eb7986edb5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1493b1265c0c5a357a29a899eda676305dbc278d5dc067f296a07c6042c66eeb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2011-07-21T15:05:02Z",
    "title_canon_sha256": "e3cebafcfa92de4d3dc873ae52e50ad25078fcccf0c3fd89d772320b5b231fb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.4293",
    "kind": "arxiv",
    "version": 2
  }
}