Pith Number

pith:COB7J4SR

pith:2011:COB7J4SREKJNIZMBF7OF57RGM5

not attested not anchored not stored refs pending

Fast and spectrally accurate Ewald summation for 2-periodic electrostatic systems

Anna-Karin Tornberg, Dag Lindbo

arxiv:1109.1667 v1 · 2011-09-08 · physics.comp-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{COB7J4SREKJNIZMBF7OF57RGM5}

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	2026-05-18T02:00:38.012129Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1383f4f2512292d465812fdc5efe266763bef22f606efcfc7d2c4244dea9d5ff

Aliases

arxiv: 1109.1667 · arxiv_version: 1109.1667v1 · doi: 10.48550/arxiv.1109.1667 · pith_short_12: COB7J4SREKJN · pith_short_16: COB7J4SREKJNIZMB · pith_short_8: COB7J4SR

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/COB7J4SREKJNIZMBF7OF57RGM5 \
  | 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: 1383f4f2512292d465812fdc5efe266763bef22f606efcfc7d2c4244dea9d5ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f6f94429171c9f78d62ccdc7594597149d8dceac21ff2e7e0fceb4f7dcf31a9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2011-09-08T09:10:42Z",
    "title_canon_sha256": "73a00e73662363e0909049224cf4f2c596191694453431efc75f00817f032e49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.1667",
    "kind": "arxiv",
    "version": 1
  }
}