Pith Number

pith:5L7VN27C

pith:2018:5L7VN27C54VK5ZY5G3R7YEWEBF

not attested not anchored not stored refs pending

A nonconforming saddle point least squares approach for elliptic interface problems

Constantin Bacuta, Jacob Jacavage

arxiv:1808.10409 v2 · 2018-08-30 · 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{5L7VN27C54VK5ZY5G3R7YEWEBF}

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	2026-05-17T23:49:57.050089Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eaff56ebe2ef2aaee71d36e3fc12c4096b4185845d8331f6f98856832a267781

Aliases

arxiv: 1808.10409 · arxiv_version: 1808.10409v2 · doi: 10.48550/arxiv.1808.10409 · pith_short_12: 5L7VN27C54VK · pith_short_16: 5L7VN27C54VK5ZY5 · pith_short_8: 5L7VN27C

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/5L7VN27C54VK5ZY5G3R7YEWEBF \
  | 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: eaff56ebe2ef2aaee71d36e3fc12c4096b4185845d8331f6f98856832a267781

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1269ff252b2047aa502f5b2700e509076f3b57055f0180d76ce0f92fa499f7ea",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-08-30T17:28:28Z",
    "title_canon_sha256": "d000c3e73987b4438ae031d30885d8523b367780b97c89687be22c9afd6a23e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.10409",
    "kind": "arxiv",
    "version": 2
  }
}