Pith Number

pith:7FU5NUMB

pith:2019:7FU5NUMBTGPYKOIWYRX7TLSLP7

not attested not anchored not stored refs pending

A Trilinear Immersed Finite Element Method for Solving Elliptic Interface Problems

Ruchi Guo, Tao Lin

arxiv:1905.10012 v2 · 2019-05-24 · 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{7FU5NUMBTGPYKOIWYRX7TLSLP7}

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	2026-05-17T23:44:47.151027Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f969d6d181999f853916c46ff9ae4b7fefc02b85b66801a60f0d8b6685f21c83

Aliases

arxiv: 1905.10012 · arxiv_version: 1905.10012v2 · doi: 10.48550/arxiv.1905.10012 · pith_short_12: 7FU5NUMBTGPY · pith_short_16: 7FU5NUMBTGPYKOIW · pith_short_8: 7FU5NUMB

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/7FU5NUMBTGPYKOIWYRX7TLSLP7 \
  | 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: f969d6d181999f853916c46ff9ae4b7fefc02b85b66801a60f0d8b6685f21c83

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "79e860e6afa9c3c4066584b17293344c67a0037e1cecdcde7070237e0e6f9ff0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-05-24T03:06:53Z",
    "title_canon_sha256": "87909300ad4e75859b3dc4959dfb34c52fdd1ad855e54b269c98593740ec4834"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.10012",
    "kind": "arxiv",
    "version": 2
  }
}