Pith Number

pith:Q4B7KHJA

pith:2013:Q4B7KHJATNQDRJSCJWBCXJLLSK

not attested not anchored not stored refs pending

Discretized Tikhonov regularization for Robin boundaries localization

Eva Sincich, Hui Cao, Sergei V. Pereverzev

arxiv:1305.1106 v1 · 2013-05-06 · 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{Q4B7KHJATNQDRJSCJWBCXJLLSK}

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	2026-05-18T03:26:24.151052Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8703f51d209b6038a6424d822ba56b929e4c3c1d1fe4503a416ed455d7244d57

Aliases

arxiv: 1305.1106 · arxiv_version: 1305.1106v1 · doi: 10.48550/arxiv.1305.1106 · pith_short_12: Q4B7KHJATNQD · pith_short_16: Q4B7KHJATNQDRJSC · pith_short_8: Q4B7KHJA

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/Q4B7KHJATNQDRJSCJWBCXJLLSK \
  | 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: 8703f51d209b6038a6424d822ba56b929e4c3c1d1fe4503a416ed455d7244d57

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d3030cadf0554b7e1e630a7d33430194380c0b9f99363f8201cbc85625fb6c0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-05-06T07:53:50Z",
    "title_canon_sha256": "95d3c6e52615ae9afe6d2f7facc1b58a272d927e3625aa0443da0335e2e979e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.1106",
    "kind": "arxiv",
    "version": 1
  }
}