Pith Number

pith:LA3MTMEG

pith:2014:LA3MTMEGVM7AQVPOLGQCEZQKBU

not attested not anchored not stored refs pending

A "Trefftz Machine" for Absorbing Boundary Conditions

Igor Tsukerman

arxiv:1406.0224 v1 · 2014-06-02 · 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{LA3MTMEGVM7AQVPOLGQCEZQKBU}

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	2026-05-18T02:50:41.449916Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5836c9b086ab3e0855ee59a022660a0d187914f6665bcf4cea9b561922e7a87e

Aliases

arxiv: 1406.0224 · arxiv_version: 1406.0224v1 · doi: 10.48550/arxiv.1406.0224 · pith_short_12: LA3MTMEGVM7A · pith_short_16: LA3MTMEGVM7AQVPO · pith_short_8: LA3MTMEG

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/LA3MTMEGVM7AQVPOLGQCEZQKBU \
  | 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: 5836c9b086ab3e0855ee59a022660a0d187914f6665bcf4cea9b561922e7a87e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76d804c0b8968bf6986a883b67827902b18467295848534a349f1cdb8ecc763d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-06-02T00:44:01Z",
    "title_canon_sha256": "7d8b26e7c94f85ed0fe98a3e63a8ff813e2f68ddfa1aef0c440b8d05c2295c58"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.0224",
    "kind": "arxiv",
    "version": 1
  }
}