Pith Number

pith:2Q62VSAS

pith:2018:2Q62VSAS4UBVEKCITSVSZH655S

not attested not anchored not stored refs pending

Differential systems with reflection and matrix invariants

F. Adri\'an F. Tojo, Santiago Codesido

arxiv:1812.04323 v1 · 2018-12-11 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2Q62VSAS4UBVEKCITSVSZH655S}

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	2026-05-17T23:57:37.081179Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d43daac812e5035228489cab2c9fddec8ad6e9f2ca5982ddc20fc159e762474a

Aliases

arxiv: 1812.04323 · arxiv_version: 1812.04323v1 · doi: 10.48550/arxiv.1812.04323 · pith_short_12: 2Q62VSAS4UBV · pith_short_16: 2Q62VSAS4UBVEKCI · pith_short_8: 2Q62VSAS

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/2Q62VSAS4UBVEKCITSVSZH655S \
  | 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: d43daac812e5035228489cab2c9fddec8ad6e9f2ca5982ddc20fc159e762474a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b786bb75e79f415ddb36ca1a65c4c6932fd1755bedb61c1203d40196a724edd4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2018-12-11T10:40:58Z",
    "title_canon_sha256": "9e88757878cb79aaac92158252cb26e5be048d8dc88cf99358afca4f60bfd03c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.04323",
    "kind": "arxiv",
    "version": 1
  }
}