Pith Number

pith:UFPZ5Z67

pith:2015:UFPZ5Z67H2HLMMEYGSXTF2GPQN

not attested not anchored not stored refs pending

A Generalized Multiscale Finite Element Method for Poroelasticity Problems I: Linear Problems

Donald L. Brown, Maria Vasilyeva

arxiv:1508.02136 v1 · 2015-08-10 · math.NA · cs.CE · cs.NA · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UFPZ5Z67H2HLMMEYGSXTF2GPQN}

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	2026-05-18T01:35:34.099941Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a15f9ee7df3e8eb6309834af32e8cf83626031ed8d31c7e1bf94c4b4570fd9d4

Aliases

arxiv: 1508.02136 · arxiv_version: 1508.02136v1 · doi: 10.48550/arxiv.1508.02136 · pith_short_12: UFPZ5Z67H2HL · pith_short_16: UFPZ5Z67H2HLMMEY · pith_short_8: UFPZ5Z67

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/UFPZ5Z67H2HLMMEYGSXTF2GPQN \
  | 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: a15f9ee7df3e8eb6309834af32e8cf83626031ed8d31c7e1bf94c4b4570fd9d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8eccc61a58968357b473784ebb08b02b695acfa0f7e0b5666ac9fcb8f81b6e20",
    "cross_cats_sorted": [
      "cs.CE",
      "cs.NA",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-08-10T06:20:54Z",
    "title_canon_sha256": "e0ed1950e1c044711e38828345d3895ba9912d182ec3f0b8526f2b9da6095891"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.02136",
    "kind": "arxiv",
    "version": 1
  }
}