Pith Number

pith:TNUCYTHT

pith:2019:TNUCYTHTUHIJA5YFFUVU2BRQ4Y

not attested not anchored not stored refs pending

Solving Laplace problems with corner singularities via rational functions

Abinand Gopal, Lloyd N. Trefethen

arxiv:1905.02960 v2 · 2019-05-08 · math.NA · cs.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{TNUCYTHTUHIJA5YFFUVU2BRQ4Y}

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	2026-05-17T23:42:49.755528Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b682c4cf3a1d09077052d2b4d0630e6147774eb67f44bf6aa79b6ae8f9bd794

Aliases

arxiv: 1905.02960 · arxiv_version: 1905.02960v2 · doi: 10.48550/arxiv.1905.02960 · pith_short_12: TNUCYTHTUHIJ · pith_short_16: TNUCYTHTUHIJA5YF · pith_short_8: TNUCYTHT

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/TNUCYTHTUHIJA5YFFUVU2BRQ4Y \
  | 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: 9b682c4cf3a1d09077052d2b4d0630e6147774eb67f44bf6aa79b6ae8f9bd794

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d98fead047202fd043035d2b837b9ce0e17078c59b5ea081bccc7c8565aceee8",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-05-08T08:44:25Z",
    "title_canon_sha256": "e989313ffbedd947dd4175599eae14b04ec4babf5deb523072581e525ed97d85"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.02960",
    "kind": "arxiv",
    "version": 2
  }
}