Pith Number

pith:GGWAGJQJ

pith:2016:GGWAGJQJ67ZIGKRC5ZFBLNOQEL

not attested not anchored not stored refs pending

Diffusion Coefficients Estimation for Elliptic Partial Differential Equations

Albert Cohen, Andrea Bonito, Gerrit Welper, Guergana Petrova, Ronald DeVore

arxiv:1609.05231 v2 · 2016-09-16 · 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{GGWAGJQJ67ZIGKRC5ZFBLNOQEL}

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	2026-05-18T00:54:52.615064Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

31ac032609f7f2832a22ee4a15b5d022c6f4947d8171cc9f2887bdf3796626f0

Aliases

arxiv: 1609.05231 · arxiv_version: 1609.05231v2 · doi: 10.48550/arxiv.1609.05231 · pith_short_12: GGWAGJQJ67ZI · pith_short_16: GGWAGJQJ67ZIGKRC · pith_short_8: GGWAGJQJ

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/GGWAGJQJ67ZIGKRC5ZFBLNOQEL \
  | 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: 31ac032609f7f2832a22ee4a15b5d022c6f4947d8171cc9f2887bdf3796626f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "989341478a38f5b1b119831d9a32234ed52d47165ca5db223bcc5e8429b2f84f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2016-09-16T20:43:23Z",
    "title_canon_sha256": "cca8e3379104d23f02ee2e46e82432a54c23a03c14a692082700ea183a57b776"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.05231",
    "kind": "arxiv",
    "version": 2
  }
}