Pith Number

pith:N4Y3RZHF

pith:2015:N4Y3RZHFQ7VCBI5SUZGYFHHGIR

not attested not anchored not stored refs pending

Immersed Boundary Smooth Extension: A high-order method for solving PDE on arbitrary smooth domains using Fourier spectral methods

Becca Thomases, David B. Stein, Robert D. Guy

arxiv:1506.07561 v2 · 2015-06-24 · 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{N4Y3RZHFQ7VCBI5SUZGYFHHGIR}

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	2026-05-18T01:04:45.849546Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f31b8e4e587ea20a3b2a64d829ce6445313df0b8590d71a33340421c858a314

Aliases

arxiv: 1506.07561 · arxiv_version: 1506.07561v2 · doi: 10.48550/arxiv.1506.07561 · pith_short_12: N4Y3RZHFQ7VC · pith_short_16: N4Y3RZHFQ7VCBI5S · pith_short_8: N4Y3RZHF

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/N4Y3RZHFQ7VCBI5SUZGYFHHGIR \
  | 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: 6f31b8e4e587ea20a3b2a64d829ce6445313df0b8590d71a33340421c858a314

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9976264f5bb0bc835e105961ded39e05aadd8001b184c585010cda76b043ae5b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-06-24T21:01:46Z",
    "title_canon_sha256": "2a540b8bf9e990295b8f4edc9ce3a1f70f9c019e11e017a4a72088c6301f3a1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.07561",
    "kind": "arxiv",
    "version": 2
  }
}