Pith Number

pith:UHCQV7DI

pith:2013:UHCQV7DIS54XXGQZQXUFFS7FCP

not attested not anchored not stored refs pending

Goal oriented adaptivity in the IRGNM for parameter identification in PDEs I:\\ reduced formulation

Alana Kirchner, Barbara Kaltenbacher, Slobodan Veljovi\' c

arxiv:1309.6800 v1 · 2013-09-26 · 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{UHCQV7DIS54XXGQZQXUFFS7FCP}

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	2026-05-18T01:47:26.324045Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1c50afc6897797b9a1985e852cbe513fd952f6518f1cb9411ed55b2d51000c4

Aliases

arxiv: 1309.6800 · arxiv_version: 1309.6800v1 · doi: 10.48550/arxiv.1309.6800 · pith_short_12: UHCQV7DIS54X · pith_short_16: UHCQV7DIS54XXGQZ · pith_short_8: UHCQV7DI

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/UHCQV7DIS54XXGQZQXUFFS7FCP \
  | 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: a1c50afc6897797b9a1985e852cbe513fd952f6518f1cb9411ed55b2d51000c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b93e6db354e940226731b018a27af75129d3a8779aaa770c1d80d3e1baed1b9d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-09-26T11:20:57Z",
    "title_canon_sha256": "aed680d2342c6c66468ac74e6b2da1001dea4d8406d3df34bfe8fa7d1ce29a20"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.6800",
    "kind": "arxiv",
    "version": 1
  }
}