Pith Number

pith:TX622W4S

pith:2019:TX622W4SYIIYCTP72CPWGSDLHI

not attested not anchored not stored refs pending

On the Existence of Solution of the Boundary-Domain Integral Equation System derived from the 2D Dirichlet Problem for the Diffusion Equation with Variable Coefficient

C.F. Portillo, Z.W. Woldemicheal

arxiv:1907.07620 v1 · 2019-07-16 · math.AP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TX622W4SYIIYCTP72CPWGSDLHI}

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	2026-07-05T01:53:06.732436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9dfdad5b92c211814dffd09f63486b3a10f6eb123e87a987315e8fca988411d2

Aliases

arxiv: 1907.07620 · arxiv_version: 1907.07620v1 · doi: 10.48550/arxiv.1907.07620 · pith_short_12: TX622W4SYIIY · pith_short_16: TX622W4SYIIYCTP7 · pith_short_8: TX622W4S

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/TX622W4SYIIYCTP72CPWGSDLHI \
  | 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: 9dfdad5b92c211814dffd09f63486b3a10f6eb123e87a987315e8fca988411d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "05c584276004c0a29774cf4ad94ebfad3d65f1f01ba9b42fe9130361b5addb98",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-07-16T15:08:50Z",
    "title_canon_sha256": "8f22af7c7c2273ab15fac4611c03f93cb4e791fe29827022d8fbb2deb774916e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.07620",
    "kind": "arxiv",
    "version": 1
  }
}