Pith Number

pith:R66JWYVG

pith:2011:R66JWYVGYSITVRYCSBQUJNGONH

not attested not anchored not stored refs pending

A Finite Difference Method for Two-Phase Parabolic Obstacle-like Problem

Avetik Arakelyan

arxiv:1111.6287 v5 · 2011-11-27 · 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{R66JWYVGYSITVRYCSBQUJNGONH}

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	2026-05-18T02:16:21.739843Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fbc9b62a6c4913ac702906144b4ce69f423469cf7cadde84e780c18fc364cd7

Aliases

arxiv: 1111.6287 · arxiv_version: 1111.6287v5 · doi: 10.48550/arxiv.1111.6287 · pith_short_12: R66JWYVGYSIT · pith_short_16: R66JWYVGYSITVRYC · pith_short_8: R66JWYVG

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/R66JWYVGYSITVRYCSBQUJNGONH \
  | 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: 8fbc9b62a6c4913ac702906144b4ce69f423469cf7cadde84e780c18fc364cd7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c4302dae21b9e21193e47e091706929e6ca9c4400d8da6dab678e3a02d3a7742",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2011-11-27T19:12:37Z",
    "title_canon_sha256": "1476bcfd94c4eaf503b85092902c96f9b780ba7ca151b4e1ae0036ca3839aa11"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.6287",
    "kind": "arxiv",
    "version": 5
  }
}