Pith Number

pith:HSA6KZSV

pith:2009:HSA6KZSV2DE6BQDXOYXAIBSWDQ

not attested not anchored not stored refs pending

Trefftz Difference Schemes on Irregular Stencils

Igor Tsukerman

arxiv:0906.1388 v2 · 2009-06-07 · physics.comp-ph · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HSA6KZSV2DE6BQDXOYXAIBSWDQ}

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	2026-05-18T02:13:28.331357Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c81e56655d0c9e0c077762e0406561c1537cf752ff1e3d49360f3ba94352d8f

Aliases

arxiv: 0906.1388 · arxiv_version: 0906.1388v2 · doi: 10.48550/arxiv.0906.1388 · pith_short_12: HSA6KZSV2DE6 · pith_short_16: HSA6KZSV2DE6BQDX · pith_short_8: HSA6KZSV

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/HSA6KZSV2DE6BQDXOYXAIBSWDQ \
  | 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: 3c81e56655d0c9e0c077762e0406561c1537cf752ff1e3d49360f3ba94352d8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a2a1f24dfd0173ba8ace77204a83f3d308a1a69d67f2a345f31c97932c699f9",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2009-06-07T20:51:26Z",
    "title_canon_sha256": "8f2c245a177a556ed81272f15fa7ac26f999cba42cd5e5ca8822b55fa0d5260a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.1388",
    "kind": "arxiv",
    "version": 2
  }
}