Pith Number

pith:PUSG3YIM

pith:2022:PUSG3YIME4LMBWZH4THGICBWSV

not attested not anchored not stored refs pending

Embedded Trefftz discontinuous Galerkin methods

Christoph Lehrenfeld, Paul Stocker

arxiv:2201.07041 v2 · 2022-01-18 · math.NA · cs.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{PUSG3YIME4LMBWZH4THGICBWSV}

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	2026-07-05T06:04:32.853231Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d246de10c2716c0db27e4ce64083695449feb28f9d8f86edac61599da52c896

Aliases

arxiv: 2201.07041 · arxiv_version: 2201.07041v2 · doi: 10.48550/arxiv.2201.07041 · pith_short_12: PUSG3YIME4LM · pith_short_16: PUSG3YIME4LMBWZH · pith_short_8: PUSG3YIM

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/PUSG3YIME4LMBWZH4THGICBWSV \
  | 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: 7d246de10c2716c0db27e4ce64083695449feb28f9d8f86edac61599da52c896

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c31a398012618a93c8a7a83910d1c2a416f816373c3742493a9eb9a1f48ac865",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2022-01-18T15:06:48Z",
    "title_canon_sha256": "cdfaaa9748fe54737d9833b3cabe49ad2c3468d1acedd02b61272767f3eb72bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.07041",
    "kind": "arxiv",
    "version": 2
  }
}